As filed with the Securities and Exchange Commission on May 13, 1999

Registration No. 333-77025


SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

AMENDMENT NO. 1 TO FORM S-1
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
STAMPS.COM INC.
(Exact Name of Registrant as Specified in Its Charter)

            Delaware                          5961                          77-0454966
(State or Other Jurisdiction of   (Primary Standard Industrial           (I.R.S. Employer
 Incorporation or Organization)      Classification Number)            Identification No.)


2900 31st Street, Suite 150
Santa Monica, California 90405
(310) 450-1444
(Address, Including Zip Code and Telephone Number,
Including Area Code, of Registrant's Principal Executive Offices) John M. Payne
President, Chief Executive Officer and Director
STAMPS.COM INC.
2900 31st Street, Suite 150
Santa Monica, California 90405
(310) 450-1444
(Name, Address, Including Zip Code and Telephone Number,
Including Area Code, of Agent for Service)

Copies to:

    Bruce R. Hallett, Esq.                     Alan K. Austin, Esq.
     Allen Z. Sussman, Esq.                   Mark L. Reinstra, Esq.
   Michael A. Zuercher, Esq.                  James C. Creigh, Esq.
      Sean M. Pence, Esq.                    Brian M. McDaniel, Esq.
Brobeck, Phleger & Harrison LLP          Wilson Sonsini Goodrich & Rosati
      38 Technology Drive                       650 Page Mill Road
    Irvine, California 92618               Palo Alto, California 94304
         (949) 790-6300                           (650) 493-9300


Approximate date of commencement of proposed sale to the public:
As soon as practicable after this Registration Statement becomes effective. If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. [_]
If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_] If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]
If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]
If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [_]

CALCULATION OF REGISTRATION FEE

----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------
                                                                                          Amount of
        Title of Each Class of                               Proposed Maximum Aggregate Registration
      Securities to be Registered                                Offering Price(1)         Fee(2)
----------------------------------------------------------------------------------------------------
Common Stock, $.001 par value..............................         $57,500,000            $15,985
----------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------

(1) Estimated solely for the purpose of computing the registration fee pursuant to Rule 457(o).

(2) Previously paid by the registrant in connection with the filing of the Registration Statement on April 26, 1999. The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Company shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.




++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+The Information in this prospectus is not complete and may be changed. We may +

+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell securities and is not soliciting an offer to buy these          +
+securities in any state where the offer or sale is not permitted.             +

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

SUBJECT TO COMPLETION, DATED MAY 13, 1999

[LOGO OF STAMPS.COM]
Shares

Common Stock

This is our initial public offering and no public market currently exists for our shares. We anticipate that the initial public offering price will be between $ and $ per share. We have applied to list our common stock for quotation on the Nasdaq National Market under the symbol "STMP."


Investing in our common stock involves risks.

See "Risk Factors" beginning on page 6.


                                                             Per Share Total
                                                             --------- -----
Public Offering Price.......................................   $       $
Underwriting Discounts and Commissions......................   $       $
Proceeds to Stamps.com......................................   $       $

The Securities and Exchange Commission and state securities regulators have not approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

We have granted the underwriters a 30-day option to purchase up to an additional shares of common stock to cover any over-allotments. If the underwriters exercise the right in full, the public offering price will total $ , the underwriting discounts and commissions will total $ , and our proceeds will total $ .

BancBoston Robertson Stephens Inc. expects to deliver the shares of common stock against payment in San Francisco, California on , 1999.


BancBoston Robertson Stephens
Thomas Weisel Partners LLC Volpe Brown Whelan & Company

The date of this Prospectus is , 1999


[Inside front cover will fold out. Fold out page will contain screenshots of our Website, including our initial page for accessing postage. Facing page will have a diagram of an information based indicium]

[Inside back cover artwork will include a graphic about the evolution of postage from the traditional stamp to the postage meter to information based indicia. The artwork will also contain a table comparing the relative benefits we believe Internet postage provides compared to other methods]

Stamps.com(TM) and Postage Server(TM) are our trademarks. This prospectus also includes trademarks of entities other than Stamps.com.


You should rely only on the information contained in this prospectus. We have not authorized anyone to provide you with information different from that contained in this prospectus. We are offering to sell, and seeking offers to buy, shares of our common stock only in jurisdictions where offers and sales are permitted. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of our common stock.

Until , 1999, all dealers that buy, sell or trade our common stock, whether or not participating in this offering, may be required to deliver a prospectus. This requirement is in addition to the dealers' obligation to deliver a prospectus when acting as underwriters and with respect to their unsold allotment or subscriptions.


TABLE OF CONTENTS

                                                                          Page
                                                                          ----
Summary..................................................................   4
Risk Factors.............................................................   6
Information Regarding Forward Looking Statements.........................  16
Use of Proceeds..........................................................  17
Dividend Policy..........................................................  17
Capitalization...........................................................  18
Dilution.................................................................  19
Selected Financial Data..................................................  20
Management's Discussion and Analysis of Financial Condition and Results
  of Operations..........................................................  21
Business.................................................................  24
Management...............................................................  36
Certain Transactions.....................................................  49
Principal Stockholders...................................................  50
Description of Capital Stock.............................................  52
Shares Eligible for Future Sale..........................................  53
Underwriting.............................................................  57
Legal Matters............................................................  59
Experts..................................................................  59
Additional Information...................................................  59
Index to Financial Statements............................................ F-1

Except as otherwise noted, all information in this prospectus: (1) reflects the automatic conversion of our outstanding preferred stock into common stock immediately prior to the closing of this offering; (2) reflects a -for- stock split of our common stock and preferred stock authorized by the Board of Directors on , 1999; and (3) assumes that the underwriters' over- allotment option will not be exercised.

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SUMMARY

You should read the following summary together with the more detailed information and financial statements and the notes to those statements appearing elsewhere in this prospectus. This prospectus contains forward looking statements that involve risks and uncertainties. Our actual results could differ materially from the results anticipated in these forward looking statements as a result of the factors set forth under "Risk Factors" and elsewhere in this prospectus.

Stamps.com Inc.

We offer a convenient, cost effective and easy to use service for purchasing and printing postage over the Internet. Our core service will enable users to print information based indicia, or electronic stamps, directly onto envelopes, labels or business documents using ordinary laser or inkjet printers. No additional hardware is necessary for a user to purchase and print our Internet postage; the user's existing PC, printer and Internet set-up are sufficient. Accessing our service is simple. A user will obtain our free software either via a download from the Internet or through an install from a CD-ROM. After installing the software and completing a brief registration process, the user will connect via the Internet to our secure Postage Server and purchase postage electronically 24 hours a day, seven days a week. We will act as an ongoing intermediary between the US Postal Service and users by offering the ability to purchase postage through our secure Postage Server. Our proprietary technology works within the rigorous US Postal Service framework of specification and performance requirements and leverages encryption, authentication and transaction processing to provide secure access to postage. Our Postage Server will be designed to interact with word processing, contact management, accounting and corporate applications to stamp letters, invoices, statements, checks and other business documents automatically.

Our Strategy

Our objective is to be the leading provider of convenient, cost effective and easy to use software-based Internet postage services. To achieve this objective, our strategy includes the following key elements:

. Enhancing our brand name through a variety of marketing and promotional techniques;

. Forming strategic partnerships with companies in the Internet, software, original equipment manufacturer, office supply and media industries;

. Establishing first-mover advantages;

. Rapidly growing our installed base by enhancing our brand name, forming strategic partnerships and establishing first-mover advantages;

. Leveraging our software-based solution and technology platform to enhance our service offering and expand the benefits of secure online transactions; and

. Pursuing our incremental revenue opportunities, including the sale of postage related consumables, peripherals and insurance, the international Internet postage market, and the document fulfillment markets.

Corporate Information

In September 1996, our founders began to investigate the feasibility of entering into the US Postal Service Information Based Indicia Program, or IBIP, and initiated the certification process. In January 1998, we were incorporated in Delaware as StampMaster, Inc. and changed our name to Stamps.com Inc. in December 1998. Our executive offices are located at 2900 31st Street, Suite 150, Santa Monica, California 90405, and our telephone number is (310) 450- 1444. Information contained on our Web site does not constitute part of this prospectus.

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The Offering

Common stock offered.......................     shares

Common stock to be outstanding after this
  offering.................................     shares

Use of proceeds............................ To expand marketing and
                                            distribution partnerships, for
                                            further development our
                                            technology and for working
                                            capital and other general
                                            corporate purposes.

Proposed Nasdaq National Market symbol..... STMP

The number of shares outstanding after this offering is excluding:
(1) 4,235,000 shares of common stock reserved for issuance pursuant to our 1999 Stock Incentive Plan, of which shares were subject to outstanding options as of the date of this prospectus; (2) shares reserved for issuance under our Employee Stock Purchase Plan; and (3) 4,700 shares of common stock subject to a warrant granted to a lender at an exercise price of $0.40 per share. See "Capitalization."

Summary Financial Data
(in thousands, except share and per share data)

The following table sets forth certain of our summary financial data. This information should be read in conjunction with the financial statements and notes thereto appearing elsewhere in this prospectus. The pro forma calculations give effect to the conversion of all outstanding shares of our preferred stock into common stock upon the closing of this offering as if such conversion occurred at inception, or the date of original issuance, if later. Our as adjusted column reflects the sale of shares of common stock offered hereby at the initial public offering price of $ per share after deducting the underwriter discount and estimated expenses payable by us.

                                 January 9, 1998  January 9, 1998
                                   (inception)      (inception)    Three Months
                                     through          through         Ended
                                December 31, 1998 March 31, 1998  March 31, 1999
                                ----------------- --------------- --------------
                                                    (unaudited)    (unaudited)
Statement of Operations Data:
Net revenues..................     $       --       $       --      $       --
Loss from operations..........         (4,013)            (359)         (3,278)
Net loss......................         (4,029)            (359)         (3,276)
                                   ----------       ----------      ----------
Basic and diluted net loss per
  share.......................          (1.22)           (0.13)          (0.71)
Pro forma basic and diluted
  net loss per share..........          (0.52)           (0.08)          (0.20)
Shares outstanding used in
  basic and diluted net loss
  per share calculations......      3,303,942        2,827,012       4,600,650
Shares outstanding used in pro
  forma basic and diluted net
  loss per share calculation..      7,728,920        4,575,945      16,705,188

                                                               As of March 31,
                                                                    1999
                                                             -------------------
                                                                 (unaudited)
                                                             Actual  As Adjusted
                                                             ------- -----------
Balance Sheet Data:
Cash and cash equivalents................................... $28,524   $
Working capital.............................................  26,090
Total assets................................................  29,872
Line of credit and capital lease obligations................   1,425
Total stockholders' equity..................................  27,051

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RISK FACTORS

You should carefully consider the risks described below before making an investment decision. The risks and uncertainties described below are not the only ones facing our company. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also impair our business operations. If any of the following risks actually occur, our business, financial condition or results of operations could be materially adversely affected, the value of our stock could decline, and you may lose all or part of your investment. This prospectus also contains forward looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward looking statements as a result of the risks described below and elsewhere in this prospectus.

We face risks associated with our operations

Our service may never be approved for commercial release.

Our service for purchasing postage over the Internet has not been approved by the US Postal Service. We depend entirely on US Postal Service approval of our Internet postage service. We are currently in the pre-approval testing stage of the US Postal Service's Information Based Indicia Program. We cannot be certain that our service will successfully emerge from this testing phase or that the US Postal Service will ever approve our service for commercial release.

We believe that US Postal Service approval of our software-based service, prior to approval of our competitors' software-based products, is critical to our success. If we don't receive the required regulatory approval in a timely manner, our business and ability to compete in the Internet postage market will suffer dramatically.

Our service will be subject to ongoing US Postal Service regulation.

If we achieve US Postal Service approval of our Internet postage service, we will remain subject to continued US Postal Service scrutiny and other government regulations. For example, US Postal Service regulations may require that our personnel with access to postal information or resources receive a security clearance prior to doing relevant work. We may experience delays or disruptions if our personnel cannot receive necessary security clearances in a timely manner, or at all. The regulations may limit our ability to hire qualified personnel. For example, sensitive clearance may only be provided to US citizens or aliens who are specifically approved to work on certain US Postal Service projects.

The US Postal Service could change certification requirements or specifications for Internet postage or revoke the approval of our service. The US Postal Service could also decide that Internet postage should no longer be an approved postage service due to security concerns or other issues. Our business would suffer dramatically if we are unable to adapt our Internet postage service to any new requirements or specifications or if the US Postal Service were to discontinue Internet postage as an approved postage method. Any other change in the current or future regulatory environment could have an adverse impact on our business and could adversely affect our operating results and profitability.

We face uncertainty in the Internet postage market.

The market for Internet postage has not developed, and its development is subject to substantial uncertainty. We cannot assure you that the Internet postage market will develop. We depend on the commercial acceptance of our service for purchasing postage over the Internet. We do not know if our target users will transition to the Internet as a means of purchasing postage. To the extent users choose the Internet to purchase postage, we cannot be certain that these consumers will adopt our system.

We have a history of losses and expect to incur losses in the future.

As of March 31, 1999, we had not generated any revenues and had a deficit accumulated during the development stage of $7.3 million. We have not achieved profitability and expect to continue to incur net losses

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for at least the next several quarters. We expect to incur increasing sales and marketing, product development and administrative expenses. As a result, we will need to generate significant revenues to achieve and maintain profitability. We cannot be certain that we will achieve sufficient revenues for profitability. If we do achieve profitability, we cannot be certain that we can sustain or increase profitability on a quarterly or annual basis.

We must effectively manage the commercial release of our service.

If we receive US Postal Service approval of our Internet postage service, we will face numerous risks coincident with the introduction of our services. We will be initially subject for approximately 30 days to a limited launch of 10,000 customers after our commercial release. We intend to conduct a controlled national launch of our service; however, we have very limited experience conducting marketing campaigns, and we may fail to generate significant interest. On the other hand, if we experience extensive interest in our services, we may fail to meet the expectations of customers due to the strains this demand will place on our Web site, network infrastructure and our transaction-processing systems.

Our ability to obtain and retain customers depends on our customer service capabilities. We plan to add customer service personnel and resources to meet demand for our Internet postage service; however, we cannot predict whether the quantity or quality of our customer service will be sufficient to address our customers' needs. If we are unable at any time during and after our controlled national launch to appropriately address customer service issues or provide a satisfactory customer experience for current or potential customers, our business and reputation may be damaged.

We may be unable to effectively manage our rapid growth.

Our reputation and our ability to attract, retain and serve our customers depend upon the reliable performance of our Web site, network infrastructure and transaction-processing systems. We have a limited basis upon which to evaluate the capability of our service to handle controlled or full commercial availability of our Internet postage service. We have recently expanded our operations significantly, and further expansion will be required to address the anticipated growth in our user base and market opportunities. To manage the expected growth of operations and personnel, we will need to improve existing and implement new transaction-processing, operational and financial systems, procedures and controls. In addition, we will need to expand, train and manage an increasing employee base. We will also need to expand our finance, administrative and operations staff. In addition, we will be required to relocate our administrative and operations personnel due to capacity constraints at our current facility. We may not be able to effectively manage this growth. Our current expansion has placed and we expect our future expansion to continue to place a significant strain on our managerial, operational and financial resources. Our current and planned personnel, systems, procedures and controls may be inadequate to support our future operations. If we are unable to manage growth effectively or experience disruptions during our expansion, our business will suffer and our financial condition and results of operations will be seriously affected.

We have a limited operating history.

In September 1996, our founders began to investigate the feasibility of entering into the US Postal Service Information Based Indicia Program and initiated the certification process. In January 1998, we were incorporated in Delaware and accordingly, we have a very limited operating history. As of March 31, 1999, we had generated no revenues and do not expect to generate any significant revenues until the US Postal Service approves our Internet postage service for commercial release. You should consider our prospects in light of the risks and difficulties frequently encountered by early stage companies in new and rapidly evolving markets. These risks include, among other things, our:

. ability to meet and maintain government specifications for our service, specifically US Postal Service requirements;

. complete dependence on a service that currently has no market acceptance;

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. need to expand our sales and support organizations;

. ability to establish and expand our brand name;

. ability to expand our operations to meet the commercial demand for our service;

. development of and reliance on strategic and distribution relationships;

. ability to prevent and respond quickly to service interruptions;

. ability to minimize fraud and other security risks; and

. competition from our competitors with greater capital resources and brand awareness.

We depend on the maintenance and development of our strategic relationships and distribution arrangements.

We have established strategic relationships with a very limited number of third parties. We believe we must establish additional relationships to effectively market our service. We have limited experience in establishing and maintaining these strategic relationships and we may fail in our efforts to establish and maintain our strategic relationships.

None of our current strategic relationships have resulted in revenues, primarily because the US Postal Service has not approved our Internet postage service for commercial release. Our strategic partners may not view their relationships with us as significant or vital to their businesses and consequently, may not perform according to our expectations. We have little ability to control the efforts of our strategic partners. As a result, even if we are successful in establishing strategic relationships, these strategic relationships may not be successful.

We face potential claims of infringement on other parties' intellectual property rights.

We face substantial uncertainty regarding the impact that other parties' intellectual property positions will have on the Internet postage market. For example, on October 22, 1997, Pitney Bowes sent formal comment to the US Postal Service asserting that fifteen US patents issued to Pitney Bowes and four US patent applications filed by Pitney Bowes would be infringed by products meeting the Information Based Indicia Program specifications. On August 17, 1998, Pitney Bowes issued a press release stating that it holds dozens of US patents related to computer-based postage metering and that it intends to engage in discussions with other marketers of computer-based postal products to license Pitney Bowes technology. To that end, we are currently in license discussions with Pitney Bowes. We cannot predict the outcome of these discussions or the impact of Pitney Bowes' intellectual property claims on our business or the Internet postage market. If Pitney Bowes is able to successfully assert its claims against Internet postage vendors and if we do not enter into a license relationship with Pitney Bowes, our business could be adversely affected. For example, Pitney Bowes could obtain monetary relief from us or permanent or temporary injunctive relief against us.

As is customary with technology companies, from time to time, we may receive or become aware of correspondence claiming potential infringement of other parties' proprietary rights. We could incur significant costs and diversion of management time and resources to defend claims regardless of the validity of these claims. We may not have adequate resources to defend these claims, and any associated costs and distractions could have a material adverse effect on our business, financial condition and results of operations. As an alternative to litigation, we may seek licenses for other parties' intellectual property rights. We may not be successful in obtaining any necessary licenses on commercially reasonable terms, if at all.

We rely on a combination of patent, trade secret, copyright and trademark laws and contractual restrictions to establish and protect proprietary rights in our products, services, know-how and information. We have three issued US patents and have filed two patent applications in the United States. We have also applied for several trademarks and service marks. We plan to apply for other patents in the future. We may not receive patents for any of our patent applications. Even if patents are issued, claims covered by these patents may be substantially reduced from the claims covered by our patent applications. Moreover, any of our patents might be held invalid or unenforceable by a court. If our patents fail to protect our technology, our competitive

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position could be harmed. Even if our patents are upheld or are not challenged, third parties may develop alternative technologies or products without infringing our patents. We generally enter into confidentiality agreements with our employees, consultants and other third parties to control and limit access and disclosure of our proprietary information. These contractual arrangements or other steps taken to protect our intellectual property may not prove to be sufficient to prevent misappropriation of technology or deter independent third party development of similar technologies. Additionally, the laws of foreign countries may not protect our services or intellectual property rights to the same extent as do the laws of the United States.

We will rely on a single service for revenues.

We expect that a substantial percentage, if not all, of our future revenues will be generated from our Internet postage service. Assuming we receive US Postal Service approval, we will be relying on a single service for our revenues for the foreseeable future. As a result, our ability to gain commercial acceptance of our Internet postage service is critical to our success. Any failure to successfully gain commercial acceptance of our Internet postage service would not only have a material adverse effect on our business and results of operations but also on our ability to seek any incremental revenue opportunities.

System and online security failures could harm our business.

Our Internet postage service depends on the efficient and uninterrupted operation of our computer and communications hardware systems. In addition, we must provide a high level of security for the transactions we execute. We rely on encryption and authentication technology to provide the security necessary for transmission of postage and other confidential information. Any breach of these security measures would severely impact our business and reputation and would likely result in the loss of customers. Furthermore, if we are unable to provide adequate security, the US Postal Service could prohibit us from selling postage over the Internet.

Despite our efforts to minimize interruption and security risks, our systems and operations are vulnerable to damage or interruption from a number of sources, including fire, flood, power loss, telecommunications failure, break-ins, earthquakes and similar events. For example, all of our Internet postage processing hardware is located in our facility in Southern California, a seismically active region. Our servers are also vulnerable to computer viruses, physical or electronic break-ins and similar disruptions. We have experienced system interruptions in the past and may experience them again in the future. Any substantial interruptions in the future could result in the loss of data and could completely impair our ability to generate revenues from our service. We do not presently have a formal disaster recovery plan in effect. We are currently evaluating our business interruption insurance to determine whether we have sufficient coverage to compensate us for losses that may occur after our commercial launch.

A significant barrier to electronic commerce and communications is the secure transmission of confidential information over public networks. Anyone who is able to circumvent our security measures could misappropriate proprietary information or cause interruptions in our operations. We may be required to expend significant capital and other resources to protect against potential security breaches or to alleviate problems caused by any breach. We rely on encryption and authentication technology to provide the security and authentication necessary for secure transmission of postage and other confidential information. Advances in computer capabilities, new discoveries in the field of cryptography, or other events or developments may result in a compromise or breach of the algorithms we use to protect customer transaction data. Should someone circumvent our security measures, it could seriously harm our reputation, business, financial condition and results of operations. Security breaches could also expose us to a risk of loss or litigation and possible liability for failing to secure confidential customer information. As a result, we may be required to expend a significant amount of financial and other resources to protect against security breaches or to alleviate any problems that they may cause.

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We may face disruptions in our operations during our relocation to a new facility in the near future.

The current lease for our facilities in Santa Monica, California will terminate on May 31, 1999. In addition, our current facilities are inadequate for our current growth plans. We are currently negotiating a lease for approximately 40,000 square feet of office space in Santa Monica, California. As a result, we will be relocating substantially all of our employees to new facilities in the near future. We may experience temporary interruptions in our normal operating activities during the moving process. If we experience more permanent disruptions related to our move, or if we are unable to complete the move in a timely manner, our development efforts and business could be harmed.

We will need to expand our product and service offerings.

We may pursue the acquisition of new or complementary businesses, products or technologies in an effort to enter into new business areas, diversify our sources of revenue and expand our product and service offerings. At present, we have no commitments or agreements and are not currently engaged in discussions for any material acquisitions or investments. To the extent we pursue new or complementary businesses, we may not be able to expand our service offerings and related operations in a cost-effective or timely manner. We may experience increased costs, delays and diversions of management's attention when integrating any new businesses or services. We may lose key personnel from our operations or those of any acquired business. Furthermore, any new business or service we launch that is not favorably received by users could damage our reputation and brand name. We also cannot be certain that we will generate satisfactory revenues from any expanded services or products to offset related costs. Any expansion of our operations would also require significant additional expenses, and these efforts may strain our management, financial and operational resources. Additionally, future acquisitions may also result in potentially dilutive issuances of equity securities, the incurrence of additional debt, the assumption of known and unknown liabilities, and the amortization of expenses related to goodwill and other intangible assets, all of which could have a material adverse effect on our business, financial condition and operating results. New issuances of securities may also have rights, preferences and privileges senior to those of our common stock.

We expect that the fluctuations in our operating results could cause our stock price to fall.

As of March 31, 1999, we had not generated any revenues from our operations. Accordingly, we have little basis upon which to predict future operating results. We expect that our revenues, margins and operating results will fluctuate significantly due to a variety of factors, many of which are outside of our control. These factors include:

. timing of the commercial release of our Internet postage service;

. the costs of our marketing programs to establish the Stamps.com brand name;

. demand for our Internet postage service;

. our ability to develop and maintain strategic and distribution relationships;

. the number, timing and significance of new products or services introduced by both us and our competitors;

. our ability to develop, market and introduce new and enhanced services on a timely basis;

. the level of service and price competition;

. changes in our operating expenses as we expand operations; and

. general economic factors.

Our cost of revenues includes costs for systems operations, customer service, Internet connection and security services; all of these costs fluctuate depending upon the demand for our service. In addition, a substantial portion of our operating expenses is related to personnel costs, marketing programs and overhead,

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which cannot be adjusted quickly and are therefore relatively fixed in the short term. Our operating expense levels are based, in significant part, on our expectations of future revenues. If our expenses precede increased revenues, both gross margins and results of operations would be materially and adversely affected because a relatively small amount of our costs and expenses varies with our revenues in the short term.

Due to the foregoing factors and the other risks discussed in this prospectus, you should not rely on period-to-period comparisons of our results of operations as an indication of future performance. It is possible that in some future periods our results of operations will be below the expectations of public market analysts and investors. In this event, the market price of our common stock is likely to fall.

We may not achieve broad brand recognition necessary to succeed.

We must quickly build our Stamps.com brand to gain market acceptance for our service. We believe it is imperative to our long term success that we obtain significant market share for our services before other competitors enter the Internet postage market. We must make substantial expenditures on product development, strategic relationships and marketing initiatives in an effort to establish our brand awareness. In addition, we must devote significant resources to ensure that our users are provided with a high quality online experience supported by a high level of customer service. We cannot be certain that we will have sufficient resources to build our brand and realize commercial acceptance of our service. If we fail to gain market acceptance for our service, our business will suffer dramatically.

We will face intense competition.

The market for Internet postage products and services is new and we expect it to be intensely competitive. At present, three other Information Based Indicia Program, or IBIP, vendors have hardware products available for beta testing. One of the vendors also has a software-based product in beta testing. We expect that our competitors will include:

. traditional providers of postage products and services, including Pitney Bowes and Neopost Industrie;

. potential providers of Internet postage products and services, including Pitney Bowes, E-Stamp and Neopost (a unit of Neopost Industrie);

. a number of indirect competitors that specialize in electronic commerce or derive a substantial portion of their revenue from electronic commerce; and

. other companies with substantial customer bases in the computer and other technical fields.

Internet postage may not be adopted by postage consumers. These consumers may continue to use traditional means to purchase postage, including purchasing postage from their local post office. To the extent Internet postage becomes a viable market, we may not be able to establish or maintain a competitive position against current or future competitors as they enter the market. Many of our competitors have longer operating histories, larger customer bases, greater brand recognition, greater financial, marketing, service, support, technical, intellectual property and other resources than us. As a result, our competitors may be able to devote greater resources to marketing and promotional campaigns, adopt more aggressive pricing policies and devote substantially more resources to Web site and systems development than us. This increased competition may result in reduced operating margins, loss of market share and a diminished brand. We may from time to time make certain pricing, service or marketing decisions or acquisitions as a strategic response to changes in the competitive environment. These actions could result in reduced margins and seriously harm our business.

We also face competitive pressures from new technologies and the expansion of existing technologies. Companies that control access to transactions through a network or Web browsers could also promote our competitors or charge us a substantial fee for inclusion. Our competitors may also be acquired by, receive investments from or enter into other commercial relationships with larger, better-established and better-financed companies as use of the Internet and other online services increases. In addition, changes in postal regulations could adversely affect our service and significantly impact our competitive position. We may be unable to compete successfully against current and future competitors, and the competitive pressures we face could seriously harm our business. See "Business--Our Competition."

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We rely on a relatively new management team and need additional personnel to grow our business.

Our management team is relatively new and we intend to continue to hire key management personnel, including a Chief Operating Officer. For example, our Chief Executive Officer was hired in October 1998 and our Chief Financial Officer was hired in September 1998. There can be no assurance that we will successfully assimilate our recently hired managers or that we can successfully locate, hire, assimilate and retain qualified key management personnel. Our business is largely dependent on the personal efforts and abilities of our senior management, including Mr. Payne, our Chief Executive Officer, Mr. LaValle, our Chief Financial Officer, and certain other key personnel. Any of our officers or employees can terminate his or her employment relationship at any time. The loss of these certain key employees or our inability to attract or retain other qualified employees could have a material adverse effect on our results of operations and financial condition.

Our future success depends on our ability to attract, retain and motivate highly skilled technical, managerial, editorial, merchandising, marketing and customer service personnel. We plan to hire additional personnel in all areas of our business. Competition for such personnel is intense, particularly in the Internet and high technology industries. As a result, we may be unable to successfully attract, assimilate or retain qualified personnel. Further, we may be unable to retain the employees we currently employ or attract additional technical personnel. The failure to retain and attract the necessary personnel could seriously harm our business, financial condition and results of operations.

We may not be able to keep up with rapid technological and other changes.

The development of our service and other proprietary technology entails significant technical and business risks. To remain competitive, we must continue to enhance and improve the responsiveness, functionality and features of our online operations. The Internet and the electronic commerce industry are characterized by:

. rapid technological change;

. changes in user and customer requirements and preferences;

. frequent new product and service introductions embodying new technologies; and

. the emergence of new industry standards and practices.

The evolving nature of the Internet could render our existing proprietary technology and systems obsolete. Our success will depend, in part, on our ability to:

. license or acquire leading technologies useful in our business;

. enhance our existing service;

. develop new services and technology that address the increasingly sophisticated and varied needs of our current and prospective users; and

. respond to technological advances and emerging industry and regulatory standards and practices in a cost-effective and timely manner.

Future advances in technology may not be beneficial to, or compatible with, our business. Furthermore, we may not successfully use new technologies effectively or adapt our proprietary technology and transaction-processing systems to user requirements or emerging industry standards on a timely basis. Our ability to remain technologically competitive may require substantial expenditures and lead time. If we are unable to adapt in a timely manner to changing market conditions or user requirements, our business, financial condition and results of operations could be seriously harmed.

We may face risks associated with international sales and regulation of postage by international agencies.

One element of our strategy is to provide our service in international markets. Our ability to provide our service in international markets would likely be subject to rigorous governmental approval and certification requirements similar to those imposed by the US Postal Service. For example, our service cannot currently be used for international mail because foreign postal authorities do not currently recognize information based indicia postage. If foreign postal authorities in the future accept postage generated by our service and if we

12

obtain the necessary foreign certification or approvals, we would likely be subject to ongoing regulation by international governments and agencies. To date, efforts to create a certification process in Europe and other foreign markets are in a very preliminary stage and these markets may not prove to be a viable opportunity for us. As a result, we cannot predict when, or if, international markets will become a viable source of revenues for a postage service similar to ours.

If we achieve significant international acceptance of our service, our business activities will be subject to a variety of potential risks, including the adoption of laws and regulatory requirements, political and economic conditions, difficulties protecting our intellectual property rights and actions by third parties that would restrict or eliminate our ability to do business in certain jurisdictions. If we begin to transact business in foreign currencies, we will become subject to the risks attendant to transacting in foreign currencies, including the potential adverse effects of exchange rate fluctuations.

Year 2000 risks may harm our business.

Many existing computer systems and software products are coded to accept only two digit entries in the date code field and cannot distinguish 21st century dates from 20th century dates. If not corrected, there could be system failures or miscalculations causing disruptions of operations, including, among other things, a temporary inability to process transactions, send invoices or engage in normal business activities. As a result, many companies' software and computer systems may need to be upgraded or replaced to comply with these "Year 2000" requirements.

We use and depend on third-party equipment and software that may not be Year 2000 compliant. We have not completed an assessment of this third-party equipment and software. If Year 2000 issues prevent our users from accessing the Internet or our service, processing postage or using their credit cards, our business and operations will suffer. Any failure of our third-party equipment or software to operate properly could require us to incur unanticipated expenses, which could seriously harm our business, operating results and financial condition. For example, pursuant to IBIP regulations, we rely on the US Postal Service's secure postage accounting vault to purchase postage credit for our customers. If the US Postal Service systems are not Year 2000 compliant, IBIP users may not be able to purchase additional postage.

Our failure to make our service Year 2000 compliant could result in:

. a decrease in sales of our service;

. an increase in the allocation of resources to address Year 2000 problems of our users without additional revenue commensurate with such dedication of resources; and

. an increase in litigation costs relating to losses suffered by our users due to such Year 2000 problems.

Furthermore, the purchasing patterns of users or potential users may be affected by Year 2000 issues as companies expend significant resources to correct their current systems. These expenditures may result in reduced funds available to purchase our service, which could seriously harm our business, operating results and financial condition. We have conducted a preliminary review of our internal computer systems to identify the systems that could be affected by the Year 2000 issue. Based on this preliminary review, we believe that our internal software systems are Year 2000 compliant. However, we continually evaluate our systems and intend to develop a contingency plan to address any Year 2000 issues we discover. See "Management's Discussion and Analysis of Financial Condition and Results of Operations."

We may be unable to meet our future capital requirements.

We believe that our current cash balances together with the net proceeds of this offering will allow us to fund our operations for at least the next 12 months. However, we may require substantial working capital to fund our business and we may need to raise additional capital. We cannot be certain that additional funds will be available on satisfactory terms when needed, if at all. Our future capital needs depend on many factors, including:

. the timing of our development efforts and US Postal Service approval of our service;

. market acceptance of Internet postage;

13

. the level of promotion and advertising required to launch our service; and

. changes in technology.

The various elements of our business and growth strategies, including our plans to support fully the commercial release of our service, our introduction of new products and services and our investments in infrastructure will require additional capital. If we are unable to raise additional necessary capital in the future, we may be required to curtail our operations significantly or obtain funding through the relinquishment of significant technology or markets. Also, raising additional equity capital would have a dilutive effect on existing stockholders.

We face risks related to the Internet industry

The success of our business will depend on the continued growth of the Internet electronic commerce and the acceptance by consumers of an Internet postage sales channel.

Our success depends in part on widespread acceptance and use of the Internet as a way to purchase postage. This practice is at an early stage of development, and demand and continued market acceptance is uncertain. We cannot predict the extent to which users will be willing to shift their purchasing habits from traditional to online postage purchasing. To be successful, our users must accept and utilize e-commerce to satisfy their product needs. Our future revenues and profits, if any, substantially depend upon the acceptance and use of the Internet and other online services as an effective medium of commerce by our target users.

The Internet may not become a viable long-term commercial marketplace due to potentially inadequate development of the necessary network infrastructure or delayed development of enabling technologies and performance improvements. The commercial acceptance and use of the Internet may not continue to develop at historical rates. Our business, financial condition and results of operations would be seriously harmed if:

. use of the Internet and other online services does not continue to increase or increases more slowly than expected;

. the infrastructure for the Internet and other online services does not effectively support future expansion;

. concerns over security and privacy inhibit the growth of the Internet; or

. the Internet and other online services do not become a viable commercial marketplace.

Regulatory and legal uncertainties could harm our business.

With the exception of US Postal Service regulations, we are not currently subject to direct regulation by any domestic or foreign governmental agency, other than regulations applicable to businesses generally, and laws or regulations directly applicable to electronic commerce. However, due to the increasing popularity and use of the Internet, it is possible that a number of laws and regulations may be adopted with respect to the Internet, relating to:

. user privacy;

. pricing;

. content;

. copyrights;

. distribution; and

. characteristics and quality of products and services.

The adoption of any additional laws or regulations may decrease the expansion of the Internet. A decline in the growth of the Internet could decrease demand for our products and services and increase our cost of doing business. Moreover, the applicability of existing laws to the Internet is uncertain with regard to many issues governing issues such as property ownership, export of encryption technology, sales tax, libel and

14

personal privacy. Our business, financial condition and results of operations could be seriously harmed by any such new legislation or regulation. The application of laws and regulations from jurisdictions whose laws do not currently apply to our business, or the application of existing laws and regulations to the Internet and other online services could also harm our business.

We plan to offer our service over the Internet in multiple states and foreign countries. Such jurisdictions may claim that we are required to qualify to do business as a foreign corporation in each state or foreign country. Our failure to qualify as a foreign corporation in a jurisdiction where we are required to do so could subject us to taxes and penalties. Other states and foreign countries may also attempt to regulate our Internet postage service or prosecute us for violations of their laws. Further, we might unintentionally violate such laws and such laws may be modified and new laws may be enacted in the future.

We are subject to risks related to the offering

No prior public market exists for our common stock.

Prior to this offering, there has been no public market for our common stock and we cannot be sure that an active trading market for the common stock will develop or continue as a result of this offering.

The concentrated control of our company could adversely affect stockholders.

After this offering, our executive officers, directors and 5% stockholders, in the aggregate, will control % of our voting stock. As a result, these stockholders will have significant influence and ability to control most matters requiring board and stockholder approval, including a significant corporate transaction like the sale of our company, a change in control, or the terms of future equity financings.

Purchasers in this offering will experience immediate and substantial dilution.

If you purchase common stock in this offering, you will incur immediate and substantial dilution in the net tangible book value of the shares purchased. We estimate this dilution to be approximately $ per share, or approximately % (based on an initial public offering price of $ ). Additional dilution may occur upon the exercise of outstanding stock options.

Our stock price could fluctuate dramatically.

The trading price of our common stock is likely to be volatile and could fluctuate dramatically in response to: factors such as the following, some of which are beyond our control:

. changes in expectations of our future financial performance, including financial estimates by securities analysts and investors;

. changes in operating and stock price performance of other Internet and online companies similar to us;

. future sales of our common stock; or

. general economic factors.

Domestic and international stock markets often experience significant price and volume fluctuations. These fluctuations, as well as general economic and political conditions unrelated to our performance may adversely affect the price of our common stock. In particular, following initial public offerings, the market prices for stocks of Internet and technology-related companies often reach levels that bear no relationship to the operating performance of these companies. These market prices are generally not sustainable and could vary widely. The market prices of the securities of Internet-related and online companies have been especially volatile. If our common stock trades to such high levels following this offering, it could eventually experience a significant decline.

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Our offering price does not necessarily relate to any established criteria of value.

Through negotiations with the underwriters, we will determine the public offering price of the shares of our common stock. This price will not necessarily relate to our book value, assets, past operating results, financial condition or any other established criteria of value. As a result, the shares being offered may trade at market prices below the initial public offering price.

Additional shares may be sold into the public market.

Sales of substantial amounts of our common stock in the public market after this offering could adversely affect the prevailing market price of our common stock. Upon completion of this offering, we will have shares of common stock outstanding. Of those shares, a total of shares (plus additional shares if the underwriters exercise their over-allotment option in full) will be freely tradable under the Securities Act unless purchased or held by our "affiliates," as that term is defined in Rule 144 under the Securities Act. As part of this offering, our executive officers, directors and stockholders have agreed with the underwriters that they will not offer or sell any shares of common stock for a period of 180 days after the date of this prospectus without the prior written consent of BancBoston Robertson Stephens Inc., except for options granted pursuant to our stock incentive plan. BancBoston Robertson Stephens Inc. may, in its sole discretion, at any time and without notice, release all of our portion of the shares of common stock subject to these agreements. Sales of substantial amounts of common stock in the public market, or the perception that such sales could occur, could adversely affect the prevailing market price for the common stock and could impair our ability to raise capital through a public offering of equity securities.

Our management has broad discretion over use of the proceeds from this offering.

The net proceeds of this offering are estimated to be approximately $ million (approximately $ million if the underwriters' over-allotment is exercised in full) at an assumed initial public offering price of $ per share and after deducting the estimated underwriting discount and estimated offering expenses. Our management will retain broad discretion as to the allocation of the proceeds of this offering. See "Use of Proceeds."

Certain provisions in our charter documents could deter takeover efforts.

Provisions of our Amended and Restated Certificate of Incorporation, Bylaws and Delaware law could make it more difficult for a third party to acquire us, even if doing so would be beneficial to our stockholders. In addition, we are subject to the provisions of Section 203 of the Delaware General Corporation Law, as amended from time to time. This statute could prohibit or delay the accomplishment of mergers or other takeover or change in control in attempts with respect to us and, accordingly, may discourage attempts to acquire us. See "Description of Capital Stock."


INFORMATION REGARDING FORWARD LOOKING STATEMENTS

This prospectus contains forward looking statements that are based on our current expectations, assumptions, estimates and projections about us and our industry. When used in this prospectus, the words "expects," "anticipates," "estimates," "intends," "believes" and similar expressions are intended to identify forward looking statements. These statements include, but are not limited to, statements under the captions "Risk Factors," "Use of Proceeds," "Management's Discussion and Analysis of Financial Condition and Results of Operations," "Business" and elsewhere in this prospectus. These forward looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those projected. The cautionary statements made in this prospectus should be read as being applicable to all related forward looking statements wherever they appear in this prospectus.

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USE OF PROCEEDS

Our net proceeds from the sale of the shares of common stock offered hereby are estimated to be approximately $ ($ million of the underwriters exercise their over-allotment option in full) based upon an assumed offering price of $ per share and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us.

We intend to use the net proceeds of the offering:

. for expansion of our marketing and distribution partnerships;

. to enhance our server and network infrastructure and the functionality of our Web site; and

. for working capital and other general corporate purposes.

As of the date of this prospectus, we cannot specify with certainty the particular uses for the net proceeds to be received upon completion of the offering. Pending such uses, the net proceeds of the offering will be invested in short-term, interest-bearing, investment-grade instruments. We intend to maintain flexibility in our use of the proceeds of this offering. The amounts actually expended for each of the purposes listed above are at our discretion and may vary significantly depending upon a number of factors, including the progress of our marketing programs, capital spending requirements, and developments in the Internet postage market and Internet commerce. Accordingly, we reserve the right to reallocate the proceeds of this offering as we deem appropriate.

From time to time, in the ordinary course of business, we may pursue the acquisition of new or complementary businesses, products or technologies in an effort to enter into new business areas, diversify our sources of revenue and expand our product and service offerings. A portion of the net proceeds may be used to fund acquisitions or investments. We currently have no arrangements, agreements or understandings, and are not engaged in active negotiations for any material acquisitions or investments.

DIVIDEND POLICY

We have never declared nor paid cash dividends on our capital stock. We currently intend to retain all available funds for use in the operation and expansion of our business and do not anticipate paying any cash dividends in the foreseeable future. Any future determination to pay dividends will be at the discretion of our Board of Directors and will depend on our results of operations, financial conditions, contractual and legal restrictions and other factors it deems relevant.

17

CAPITALIZATION

The following table sets forth our capitalization as of March 31, 1999 on an actual basis and on a pro forma as adjusted basis (a) to reflect the automatic conversion of all outstanding shares of preferred stock into shares of common stock upon the closing of this offering and (b) to give effect to the receipt of the receipt of the estimated net proceeds from the sale of shares of common stock at an assumed initial public offering price of $ per share.

                                                             March 31, 1999
                                                           --------------------
                                                               (Unaudited)
                                                                     Pro Forma
                                                           Actual   As Adjusted
                                                           -------  -----------
                                                             (in thousands,
                                                           except share data)
Line of credit and capital lease obligations ............. $ 1,425    $ 1,425
                                                           -------    -------
Stockholders' equity:
 Preferred stock, par value $0.001, (Series A, B and C);
   15,500,000 shares authorized; 15,246,986 shares issued
   and outstanding, actual; 5,000,000 shares authorized;
   no shares issued and outstanding, pro forma as
   adjusted...............................................  34,278         --
 Common stock, par value $0.001; 40,000,000 shares
   authorized, 4,600,650 issued and outstanding, actual;
   authorized,         issued and outstanding, pro forma
   as adjusted............................................       5
Additional paid-in capital................................     190
Notes receivable for stock sales..........................    (117)      (117)
Accumulated deficit during development stage..............  (7,305)    (7,305)
                                                           -------    -------
 Total stockholders' equity...............................  27,051
  Total capitalization.................................... $28,476
                                                           =======    =======

Our stockholders' equity excludes 3,099,606 shares of common stock issuable upon exercise of outstanding options granted under our 1999 Stock Incentive Plan plus an additional shares reserved for issuance under our 1999 Stock Incentive Plan and Employee Stock Purchase Plan and warrants to purchase 4,700 shares of common stock at $0.40 per share.

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DILUTION

Our pro forma net tangible book value as of March 31, 1999 was approximately $ million, or $ per share of common stock. Pro forma net tangible book value per share represents the amount of our pro forma total tangible assets less pro forma total liabilities divided by the pro forma number of shares of common stock outstanding as of March 31, 1999. Without taking into account any other changes in pro forma net tangible book value other than to give effect to our sale of the shares of common stock offered hereby and the receipt and application of the net proceeds therefrom, the pro forma net tangible book value of as of March 31, 1999 would have been $ million, or $ per share of common stock. This represents an immediate increase in pro forma net tangible book value of $ per share to existing stockholders and an immediate dilution in pro forma net tangible book value of $ per share to investors purchasing common stock in this offering.

The following table illustrates this per share dilution:

Assumed initial public offering price per share...............        $
 Pro forma net tangible book value per share as of March 31,
   1999....................................................... $
 Increase per share attributable to new investors.............
                                                               ------
Pro forma net tangible book value per share after this
  offering....................................................
                                                                      ------
Dilution per share to new investors...........................        $
                                                                      ======

The following table summarizes, on a pro forma basis as of March 31, 1999 the difference between the number of shares of common stock purchased from us, the total consideration paid and the average price per share paid by existing stockholders and by new investors, assuming an initial public offering price of $ per share and before deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us:

                                  Shares
                                Purchased    Total Consideration     Average
                              -------------- ----------------------   Price
                              Number Percent  Amount      Percent   per Share
                              ------ ------- ----------- ---------- ---------
Existing stockholders.......                 $                       $
New investors...............                                         $
                               ---     ---   -----------   -------
  Total.....................           100%  $                 100%
                               ===     ===   ===========   =======

The foregoing table assumes no exercise of the underwriters' over-allotment option or shares underlying outstanding options. As of March 31, 1999, options to purchase shares of common stock were outstanding at a weighted average exercise price of $ per share. To the extent that these options are exercised, new investors will experience further dilution. See "Management--Stock Options," "Description of Capital Stock" and note 5 of the notes to our financial statements.

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SELECTED FINANCIAL DATA
(in thousands, except per share data)

The following selected financial data should be read in conjunction with our financial statements and the notes to such statements and "Management's Discussion and Analysis of Financial Condition and Results of Operations" included elsewhere in this prospectus. The statement of operations data for the period from inception through December 31, 1998 and the balance sheet data at December 31, 1998, are derived from our financial statements which have been audited by Arthur Andersen LLP, our independent public accountants, and are included elsewhere in this prospectus. The statements of operations data for the period January 9, 1998 (inception) through March 31, 1998 and the three month period ended March 31, 1999, and the balance sheet data at March 31, 1999, are derived from our unaudited interim financial statements included elsewhere in this prospectus. Our unaudited financial statements have been prepared on substantially the same basis as the audited consolidated financial statements and, in the opinion of our management, include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results of operations for such periods. Please be advised that historical results are not necessarily indicative of the results to be expected in the future, and results of interim periods are not necessarily indicative of results for the entire year.

                            January 9, 1998     January 9, 1998
                          (inception) through (inception) through Three Months Ended
                           December 31, 1998    March 31, 1998      March 31, 1999
                          ------------------- ------------------- ------------------
                                                  (unaudited)        (unaudited)
Statement of Operations
  Data:
Net revenues............      $       --          $       --         $        --
Costs and expenses:
 Research and
   development..........           1,532                  83               1,160
 General and
   administrative.......           2,481                 276               2,118
                              ----------          ----------         -----------
  Total costs and
    expenses............           4,013                 359               3,278
Loss from operations....          (4,013)               (359)             (3,278)
Interest expense, net...             (16)                 --                   2
                              ----------          ----------         -----------
Net loss................      $   (4,029)         $     (359)        $    (3,276)
                              ==========          ==========         ===========
Basic and diluted net
  loss per share........      $    (1.22)         $    (0.13)        $     (0.71)
Pro forma basic and
  diluted net loss per
  share.................      $    (0.52)         $    (0.08)        $     (0.20)
Weighted average shares
  outstanding used in
  basic and diluted net
  loss per share
  calculation...........       3,303,942           2,827,012           4,600,650
Weighted average shares
  outstanding used in
  pro forma basic and
  diluted net loss per
  share calculation.....       7,728,920           4,575,945          16,705,188

                               As of           As of
                         December 31, 1998 March 31, 1999
                         ----------------- --------------
                                            (unaudited)
Balance Sheet Data:
Cash and cash
  equivalents...........      $3,470          $28,524
Working capital.........       1,385           26,090
Total assets............       4,426           29,872
Line of credit and
  capital lease
  obligations...........       1,473            1,425
Total stockholders'
  equity................       2,027           27,051

Our statement of operations data for the period from inception through December 31, 1998 includes approximately $35,000 of expenses incurred prior to incorporation. Prior to incorporation, the founders primarily investigated the feasibility of entering into the US Postal Service's Information Based Indicia Program and initiated the certification process.

All expenses other than those related to research and development are classified as general and administrative until we recognize revenue from our principal business activities. In addition, the provision for income taxes which consist solely of minimum state taxes is classified as general and administrative.

Please refer to note 1 of the notes to our financial statements for a description of the method used to compute basic and diluted loss per share and pro forma basic and diluted loss per share. Our pro forma calculations give effect to the conversion of all outstanding shares of our preferred stock into common stock upon closing of this offering as if such conversion occurred on January 9, 1998, or the date of original issuance, if later.

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MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This prospectus contains forward looking statements that involve risks and uncertainties. Actual events or results may differ materially from those projected in such forward looking statements. See "Information Regarding Forward Looking Statements." The following discussion of our financial condition and results of operations also should be read in conjunction with the financial statements and notes to those statements included elsewhere in this prospectus.

Overview

We offer a convenient, cost effective and easy to use service for purchasing and printing postage over the Internet. Beginning in September 1996, our founders investigated the feasability of entering into the US Postal Service Information Based Indicia Program and initiated the certification process. We had no revenues and immaterial expenses prior to our incorporation in Delaware on January 9, 1998. In February 1998, we raised $1.5 million in a private placement transaction and commenced development of our Postage Server within the US Postal Service framework of specification and performance requirements.

In August 1998, we received US Postal Service approval for Phase I beta testing. Also in August 1998, we raised an additional $0.6 million in private placements and commenced hiring key executives. In September 1998, we hired a core technology team to continue development of our Postage Server and in October and November 1998, we closed another private placement transaction for $3.9 million.

In December 1998, we changed our name from StampMaster, Inc. to Stamps.com Inc. and received US Postal Service approval for Phase II beta testing, which resulted in an increase in the user base for our service from 25 to 500. From the end of December 1998 to the end of March 1999, we grew from 34 employees to 77 employees, including key executive hires. In March 1999, we also completed a private placement transaction that raised $30.0 million.

To date, we have not recognized any revenue and do not expect to recognize any revenues until after we receive US Postal Service approval for our Internet postage service.

Our Results of Operations

Revenues. We have recognized no revenues to date and we do not expect to recognize revenues until after our Internet postage service is approved by the US Postal Service for commercial release. If the US Postal Service approves our Internet postage service for commercial release, we will offer service plans that provide access to our Internet Postage Server and we plan to assess a "convenience" fee based on the customer's postage use.

Cost of Revenues. We currently have no cost of revenues because we have not recognized any revenues to date. Once we begin to charge convenience fees, cost of revenues will primarily consist of costs related to customer service activities and server and network operations and, to a lesser extent, bank processing charges for customer fees paid by credit card, Internet connection charges, depreciation of server and network equipment and allocation of overhead.

Sales and Marketing Expenses. Costs related to our sales and marketing efforts, which to date have not been significant, are currently classified as general and administrative expenses until we commence charging convenience fees. Our sales and marketing expenses will consist of compensation for sales and marketing personnel, advertising, creative development and promotional costs and commissions. The majority of these costs will be directed to programs designed to build brand name recognition, attract a customer base and retain the anticipated customer base.

Research and Development Expenses. Our research and development expenses principally consist of compensation for personnel involved in the development effort of our Postage Server, which includes our Web site and transaction- processing systems, and expenditures for consulting services, third-party software and other costs related to development. Our research and development expenses for the year ended December 31, 1998

21

were $1.5 million. Our research and development expenses increased to $1.2 million for the quarter ended March 31, 1999 from approximately $83,000 for the quarter ended March 31, 1998. The increase is due to our expanded development efforts in the latest quarter, including increased personnel and consulting costs. We believe that significant investments in research and development are required to remain competitive. We expect that we will continue to incur significant research and development expenses.

General and Administrative Expenses. Our general and administrative expenses consist primarily of salaries and related costs for general corporate functions, including finance, accounting, facilities and fees for legal and other professional services. Our general and administrative expenses for the year ended December 31, 1998 were $2.5 million. Our general and administrative expenses increased to $2.1 million for the quarter ended March 31, 1999 from approximately $276,000 for the quarter ended March 31, 1998. The increase is principally due to increase in personnel, facility costs and professional service fees.

Liquidity and Capital Resources

Since our inception, we have financed our operations primarily through the private placement of equity securities, raising $36.0 million through March 31, 1999. At March 31, 1999 and 1998, we had $28.5 million and $1.0 million, respectively, in cash and cash equivalents. We have had significant negative cash flows from operating activities in each fiscal and quarterly period to date.

Net cash used in our operating activities was $2.9 million for the quarter ended March 31, 1999, $0.3 million for the quarter ended March 31, 1998 and $3.1 million for the year ended December 31, 1998. Cash used in operating activities consisted primarily of net operating losses and increases in prepaid expenses, which were partially offset by increases in accrued expenses and accounts payable.

Net cash used in our investing activities was $0.3 million for the quarter ended March 31, 1999, $0.1 million for the quarter ended March 31, 1998 and $0.4 million for the year ended December 31, 1998. Net cash used in investing activities in these periods consisted primarily of capital expenditures for computer equipment, purchased software and office equipment.

Net cash provided by our financing activities was $28.3 million for the quarter ended March 31, 1999, $1.5 million for the quarter ended March 31, 1998 and $6.9 million for the year ended December 31, 1998. Net cash provided by financing activities was principally attributable to the private sale of preferred stock and, to a lesser extent, to the proceeds from a line of credit.

We believe that our current cash balances together with the net proceeds of this offering will allow us to fund our operations for at least the next 12 months. However, we may require substantial working capital to fund our business and we may need to raise additional capital. We cannot be certain that additional funds will be available on satisfactory terms when needed, if at all. Our future capital needs depend on many factors, including:

. the timing of our development efforts and US Postal Service approval of our service;

. market acceptance of Internet postage;

. the level of promotion and advertising required to launch our service; and

. changes in technology.

The various elements of our business and growth strategies, including our plans to support fully the commercial release of our service, our introduction of new products and services and our investments in infrastructure will require additional capital. If we are unable to raise additional necessary capital in the future, we may be required to curtail our operations significantly or obtain funding through the relinquishment of significant technology or markets. Also, raising additional equity capital would have a dilutive effect on existing stockholders.

Year 2000

Many existing computer systems and software products are coded to accept only two digit entries in the date code field and cannot distinguish 21st century dates from 20th century dates. If not corrected, there could

22

be system failures or miscalculations causing disruptions of operations, including, among other things, a temporary inability to process transactions, send invoices or engage in normal business activities. As a result, many companies' software and computer systems may need to be upgraded or replaced to comply with these "Year 2000" requirements.

We are in the process of reviewing the Year 2000 compliance of our internally developed proprietary software. This review has included testing to determine how our systems will function at and beyond the Year 2000. Since inception, we have internally developed substantially all of the systems for the operation of our Internet postage service. These systems include the software used to provide customer interaction and transaction-processing and distribution functions to our service, as well as monitoring and back-up capabilities. Based upon our assessment to date, we believe that our internally developed proprietary software is Year 2000 compliant. However, we cannot be sure how our software will integrate with other vendor-provided software.

We use and depend on third-party equipment and software, including systems operated by the US Postal Service, that may not be Year 2000 compliant. We are currently assessing the Year 2000 readiness of other third-party supplied software, computer technology and other services and of our vendors. Based upon the results of this assessment, we will develop and implement, if necessary, a remediation plan with respect to third-party software, third-party vendors and computer technology and service that may fail to be Year 2000 compliant. To date, the expenses associated with this assessment have not been material and our potential remediation costs and potential remediation plan cannot be determined at this time. If Year 2000 issues prevent our users from accessing the Internet or our service, processing postage or using their credit cards, our business and operations will suffer. Any failure of our third-party equipment or software to operate properly could require us to incur unanticipated expenses, which could seriously harm our business, operating results and financial condition. For example, pursuant to IBIP regulations, we rely on the US Postal Service's secure postage accounting vault to purchase postage credit for our customers. If the US Postal Service systems are not Year 2000 compliant, IBIP users may not be able to purchase additional postage.

The Year 2000 readiness of the general infrastructure necessary to support our operations is difficult to assess. For instance, we depend on the integrity and stability of the Internet to provide our services. We also depend on the Year 2000 compliance of the computer systems and financial services used by consumers. Thus, the infrastructure necessary to support our operations consists of a network of computers and telecommunications systems located throughout the world and operated by numerous unrelated entities and individuals, none of which have the ability to control or manage the potential Year 2000 issues that may impact the entire infrastructure. Our ability to assess the reliability of this infrastructure is limited and relies solely on generally available news reports, surveys and comparable industry data. Based on these sources, we believe most entities and individuals that rely significantly on the Internet are carefully reviewing and attempting to remediate issues relating to Year 2000 compliance, but it is not possible to predict whether these efforts will be successful in reducing or eliminating the potential negative impact of Year 2000 issues. A significant disruption in the ability of consumers to reliably access the Internet or portions of it or to use their credit cards or other electronic payment methods would have an adverse effect on demand for our services and would have a material adverse effect on us.

At this time, we have not yet developed a contingency plan to address situations that may result if we or our vendors are unable to achieve Year 2000 compliance. The cost of developing and implementing such a plan, if necessary, could be material. Any failure of our material systems, our vendors' material systems or the Internet to be Year 2000 compliant could have material adverse consequences for us. Such consequences could include difficulties in operating our service effectively or conducting other fundamental parts of our business.

Recently Issued Accounting Pronouncements

The American Institute of Certified Public Accountants issued Statement of Position, or SOP, No. 98-1, "Software for Internal Use," which provides guidance on accounting for the costs of computer software developed or obtained for internal use. SOP No. 98-1 is effective for financial statements for fiscal years beginning after December 15, 1998. We do not expect that the adoption of SOP No. 98-1 will have a material impact on our financial statements.

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BUSINESS

This prospectus contains forward looking statements that involve risks and uncertainties. Actual results and the timing of certain events could differ materially from those projected in the forward looking statements due to a number of factors, including those set forth under "Risk Factors" and elsewhere in this prospectus.

Our Company

We offer a convenient, cost effective and easy to use service for purchasing and printing postage over the Internet. Our core service will enable users to print information based indicia, or electronic stamps, directly onto envelopes, labels or business documents using ordinary laser or inkjet printers. No additional hardware is necessary for a user to purchase and print our Internet postage; the user's existing PC, printer and Internet set-up are sufficient. Accessing our service is simple. A user will obtain our free software either via a download from the Internet or through an install from a CD-ROM. After installing the software and completing a brief registration process, the user will connect via the Internet to our secure Postage Server and purchase postage electronically 24 hours a day, seven days a week. We will act as an ongoing intermediary between the US Postal Service and users by offering the ability to purchase postage through our secure Postage Server. Our proprietary technology works within the rigorous US Postal Service framework of specification and performance requirements and leverages encryption, authentication and transaction processing to provide secure access to postage. Our Postage Server will be designed to interact with word processing, contact management, accounting and corporate applications to stamp letters, invoices, statements, checks and other business documents automatically.

Overview of Our Industry

Growth of Internet Commerce

The Internet has emerged as a significant global communications medium, enabling millions of people to share information and conduct business electronically. A number of factors have contributed to the growth of the Internet and its commercial use, including:

. the large and growing installed base of personal computers in homes and businesses;

. improvements in network infrastructure and bandwidth;

. easier and cheaper access to the Internet;

. increased awareness of the Internet among consumer and business users; and

. the rapidly expanding availability of online content and commerce which increases the value to users of being connected to the Internet.

According to International Data Corporation, or IDC, the number of Web users worldwide will grow from an estimated 100 million in 1998 to 319 million by 2002. In addition, IDC estimates that the percentage of such users buying goods and services on the Internet will grow from 26% in December 1997 to 40% in December 2002. IDC further estimates that the total value of goods and services purchased over the Web will increase from approximately $12.4 billion in 1997 to approximately $425.0 billion in 2002. Business-to-business commerce is expected to be a significant driver in the future growth of Internet commerce. For example, IDC estimates that business-to-consumer commerce on the Internet will grow from approximately $5.0 billion in 1997 to approximately $95.0 billion in 2002 while business-to-business commerce on the Internet will grow from approximately $7.0 billion in 1997 to approximately $331.0 billion in 2002.

Rapid Growth in Internet Usage by Small Businesses

The small office/home office, or SOHO, and small business markets represent a large and growing customer segment. According to IDC, there were a combined 44.7 million small businesses and home offices in the United States in 1998, a number which IDC forecasts will grow to 57.6 million by 2002. For 1998, IDC

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reported that small businesses with less than 100 employees numbered 7.4 million of which 77% had fewer than 10 employees. In addition, home offices numbered 37.3 million, of which 22.2 million were income producing home offices, and the remainder were home offices used for corporate after hours work or telecommuting.

We believe that small businesses increasingly will rely on the functionality and pervasiveness of the Internet to reach and serve a large and global group of end users. The reduced cost of selling and marketing on the Web, the ability to build and serve a large base of customers electronically and the potential for personalized low-cost customer interaction provide significant economic advantages. These overall benefits, combined with accessibility, have led to adoption of the Internet by small businesses and home offices. According to IDC, there will be 30.2 million US home offices accessing the Internet by 2002. According to Cyber Dialogue/FindSVP's 1999 US Small Business Internet Survey, 43% of businesses with fewer than 100 employees are estimated to be online in 1999. Of those small businesses that are currently online, 63% are already ordering products online and are spending an average of $171 monthly on postage. The Cyber Dialogue/FindSVP survey also found that 64% of online small businesses have employees who are online multiple times a day. This increased use of the Internet has resulted in small businesses becoming significant electronic commerce participants. IDC estimates that small businesses accounted for $4.5 billion of electronic commerce in 1998 and will account for approximately $102.0 billion of electronic commerce activity in 2002.

Traditional Postage Industry and the Emergence of the Internet Postage

The traditional postage industry is large and growing. According to the US Postal Service Annual Report, the total postage market was $58.0 billion in 1998, of which $38.9 billion was represented by first class, priority and express mail with the remainder consisting of other classes of mail such as periodicals, bulk and international. In addition, the US Postal Service processed over 197 billion pieces of mail in 1998 and, despite the growth in the use of e-mail, the total US postage market increased by 3.1% in 1998 from 1997. Keenan Vision, an independent research firm, estimates that revenues from first class, priority and express mail will grow to $46.2 billion by 2002. Despite this consistent growth in the postage market, the US Postal Service has experienced:

. strong competition from overnight delivery services;

. loss of revenue due to postal fraud; and

. continued public demand for more convenient access to US Postal Service products and services.

In response to these challenges, in 1995 the US Postal Service announced a program for its first new postage method since the approval of the postage meter in 1920. The Information Based Indicia Program, or IBIP, is a ten-stage certification process for commercial release of Information Based Indicia products, or electronic postage, that can be purchased over the Internet and printed from a computer using ordinary laser or inkjet printers. Indicia are a new type of US Postal Service-approved postage marks similar to stamps or metered postage. Information Based Indicia, which are essentially digital stamps, consist of a two dimensional bar code containing an encrypted digital signature that make each indicium unique. Through IBIP, the US Postal Service is seeking to enhance user convenience with a new access channel for postage that allows users to print postage from a personal computer 24 hours a day, seven days a week. IBIP is intended to achieve US Postal Service security and revenue objectives by incorporating technological security features in each unique digitally-signed indicium and a secure postage accounting vault to provide greater revenue security. All Internet postage products, including any subsequent enhancements or additional implementation of a product, must complete exhaustive US Postal Service testing and evaluation to ensure operational reliability, financial integrity and security to become certified for commercial distribution. Overall, IBIP aims to provide improved, accurate mail processing and increased productivity, a result which is intended to:

. reduce US Postal Service costs and postal fraud;

. increase US Postal Service service to underserved markets, including the rapidly growing SOHO and other small business markets; and

. improve the US Postal Service's competitive position against overnight delivery services.

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The emergence of Internet postage though the US Postal Service's IBIP initiative has created an attractive channel for the sale of postage, particularly to SOHO and other small businesses. According to a 1997 US Postal Service survey of over 1,600 home offices, 98% of the respondents would likely use commercial software products to print postage directly from their computers, 88% of the respondents did not use a postage meter and 43% of the respondents purchased over $50 of postage per month. We believe that small businesses consider cost-effective mail generation, elimination of trips to the post office and the production of professional-looking mail as key components of an effective mailing system. Internet postage satisfies these requirements by providing 24 hours a day, seven day a week access to metered mail from the desktop. Furthermore, when considering the total cost of a traditional postage meter, including lease fees for both the meter and scale, meter resetting fees and proprietary consumables such as ink cartridges, small businesses pay a significant premium in addition to their normal postage expenditures for leasing a postage meter. Leasing a postage meter also requires space for additional hardware and the purchase of proprietary consumables. Meanwhile, small businesses that find leasing a postage meter uneconomical are still faced with the inconvenience of travelling to the post office, ATM or other locations to purchase stamps.

Our Solution

We offer a convenient, cost effective and easy to use service for purchasing and printing postage over the Internet. We target the SOHO, other small business, corporate and consumer user markets with an Internet service that is accessible with free software downloaded from the Internet or installed from a free CD-ROM; the user's existing PC, printer and Internet set up are sufficient to purchase and print postage. Using our service requires no purchase or installation of a hardware device for a user's PC and users can access and print postage without the US Postal Service address matching CD-ROM needed by hardware-based IBIP products. Our Internet postage solution was the first software-based service approved for beta testing by the US Postal Service and provides the following benefits to the user and the US Postal Service:

Benefits to the User. Our Internet postage service is designed to be convenient, cost effective and easy to use and provides the following benefits to the user:

. Unlimited, convenient access to postage from the desktop 24 hours a day, 7 days a week;

. Prints address and postage in one easy step;

. Secure and accurate tracking of postage expenditures;

. Cost effective relative to traditional postage meter solutions; and

. No additional hardware peripherals required.

Using our free proprietary software client, which can be downloaded from the Internet or installed from a CD-ROM, users can purchase postage with their PC from our secure Postage Server where and when it is most convenient. Our solution allows users to avoid common inconveniences such as running out of postage, using too much postage for a letter or parcel and enduring long lines at the post office. With the Stamps.com service, users can print postage in any denomination and rely on secure, accurate management of their postal dollars. Finally, we will seek to enhance our convenient, easy to use service with solutions such as integrating our software with a wide range of software applications, including word processors and database managers, to increase the efficiency of everyday tasks such as writing letters, paying bills or generating invoices.

Benefits to the US Postal Service. Our Internet postage service provides several benefits to the US Postal Service including:

. increased convenience to the postal consumer;

. increased security to protect postal revenues;

. ability to more effectively compete with overnight delivery services;

. use of advanced technology for more cost efficient mail processing and tracking; and

. cost savings relating to printing and distribution of traditional postage stamps.

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We believe our convenient, cost effective, easy to use Internet postage solution addresses the US Postal Service's goals for the Information Based Indicia Program. Our service is designed to provide a high level of security and auditing capabilities, helping to reduce the millions of dollars of known postal fraud to the US Postal Service. As additional security and in accordance with US Postal Service specifications, our solution will provide for the printing of unique, secure Information Based Indicia, or electronic postage, on ordinary laser or inkjet printers. Our service is designed to promote postal efficiencies and cost savings for the US Postal Service with address verification and correction and extended zip code printing capabilities. Finally, our solution is designed to allow the US Postal Service to capitalize on advances in technology, especially as the US Postal Service seeks to phase out traditional postage methods such as mechanical and electro-mechanical postage meters.

Our Strategy

Our objective is to be the leading provider of convenient, cost effective and easy to use software-based Internet postage services. To achieve this objective, our strategy includes the following key elements:

Enhance Our Brand Name. We intend to increase our brand recognition through a variety of marketing and promotional techniques, including the prominent display of our logo on all pieces of mail generated through our service and co- marketing and co-branding agreements with strategic partners. We also intend to promote our brand by conducting an ongoing public relations campaign and developing affiliations and affinity programs to extend the brand. We believe that building the brand awareness of our Internet Postage Server is critical to attracting and expanding our installed base.

Leverage Our Premier Strategic Partnerships. We intend to develop and leverage premier strategic partnerships to gain access to large numbers of potential users, cooperatively market products and services, cross-sell additional services and gain entry into new markets. As of April 1999, we have entered into strategic partnerships with AOL and Office Depot, among others. We believe that we can further leverage our premier strategic partnerships to enhance our brand name and grow our installed base.

Establish First-Mover Advantages. Our Internet postage solution was the first software-based Internet postage solution approved for beta testing required for US Postal Service certification. We believe that we will have significant first-mover and time-to-market advantages as a software-based solution in the Internet postage market. We intend to use this first-mover advantage to rapidly establish our brand and grow our installed base. We believe our potential market position will be enhanced by significant barriers to entry, including:

. a ten-step US Postal Service certification process, including an approximate nine month beta testing phase;

. our anticipated lead in providing a proprietary software-based Internet postage solution that does not require additional hardware or a CD-ROM to be employed with a user's PC;

. significant up-front time and investment by potential competitors in technology and technical infrastructure;

. strong brand awareness for our software-based Internet postage solution; and

. inconvenience of switching from one metered postage provider to another.

Rapidly Grow Our Installed Base. We intend to broaden our installed base through enhancing our brand, forming strategic partnerships and establishing first-mover advantages. We believe that our service can achieve rapid distribution because there is no investment in hardware beyond a PC and printer, and users can obtain the software client for free. We are primarily targeting the SOHO and small business markets as well as certain segments of the corporate and consumer markets.

Leverage Our Software-Based Solution and Technology Platform. We intend to leverage our scaleable, e-commerce platform to enhance our service offering and expand the benefits of secure online transactions. We believe that we have an inherent advantage relative to our competitors in the Internet postage industry because

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our solution does not require the use of additional hardware. We believe we can achieve rapid distribution of our services as users download or install our free software. Additionally, our service provides increased flexibility and scalability over competing solutions because transactions are processed through our secure Postage Server using the free software whereas competing hardware solutions require each user to utilize a CD-ROM and peripheral hardware device for each PC that is engaged in a postage transaction. We will continue to invest in and enhance our technology in order to increase efficiency, reliability and bandwidth, to expand services and to reduce costs.

Pursue Our Incremental Revenue Opportunities. We intend to leverage our brand, electronic commerce capabilities, infrastructure and user base to develop incremental revenue opportunities. We will consider the following opportunities:

. Sale of Postage Related Consumables, Peripherals and Insurance. We intend to leverage our Web site to offer mailing-related consumables, such as labels and envelopes, and peripherals, such as mechanical scales, PC-enabled digital scales and label printers. We also intend to offer package insurance to our customers through third-party insurance companies.

. International Internet Postage Market. We believe that there are significant opportunities in international markets for our Internet postage service. We intend to focus on those regions where there is a critical mass of Internet utilization, and a large current postage market with a need for highly secure transaction-oriented Internet services once foreign postal authorities accept the use of Internet postage.

. Document Fulfillment Market. We will consider investing in technology that will allow us to extend our core Internet postage technology to print authenticated documents, such as airline, movie and concert tickets, from their laser or inkjet printers.

Our Internet Postage Service

We offer a convenient, cost effective and easy to use service for purchasing and printing postage over the Internet. Our core service will enable users to print information based indicia, or electronic stamps, directly onto envelopes, labels or business documents using ordinary laser or inkjet printers. No additional hardware is necessary for a user to purchase and print our Internet postage; the user's existing PC, printer and Internet set-up are sufficient.

[Insert Graphic--Description: Describe three steps to using our service. Step 1 is download and install free software and complete brief registration process. Step 2 is users print postage using their existing PC and printer set-up. Step 3 is postage is printed onto envelopes, labels or business documents.]

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Accessing our service is simple. A user will obtain our free software either via a download from the Internet or through an install from a CD-ROM. After installing the software and completing a brief registration process, the user can connect via the Internet to our secure Postage Server and purchase postage electronically 24 hours a day, seven days a week. We act as an ongoing intermediary between the US Postal Service and users by offering users the ability to purchase postage through our secure Postage Server. We use sophisticated cryptography and proprietary technologies which meet strict US government security standards and our service incorporates US Postal Service- mandated address verification features which enhance the efficiency of mail processing and delivery. Finally, our Postage Server is designed to interact with word processing, contact management, accounting and corporate applications to provide postage for letters, invoices, statements, checks and other business documents automatically. Our customers will sign up for a service plan that provides access to our Internet Postage Server and we plan to assess a "convenience" fee based on the customer's postage use. The service plan will also offer benefits that could include such items as free postage, free labels and envelopes and discounts on scales or printers.

As part of our Internet postage service, we intend to roll out functional modules of our Web site to address our strategic initiatives, including a Virtual Post Office which will provide a variety of mailing services and resources including bulk mail fulfillment, free e-mail, Express and Priority Mail tracking, ZIP Code look-up, and postal information including postal publications; a Product Center that will serve as an online commerce module featuring mailing supplies and general office supplies; and a Small Business Resource Center module that will feature products, services, and editorial content targeted to the small business market.

The US Postal Service Certification Process

All Internet postage products must complete extensive US Postal Service testing and evaluation to ensure operational reliability, financial integrity and security to become certified for commercial distribution. Each additional implementation of a particular product or function requires additional evaluation and incremental approval by the US Postal Service prior to commercial delivery.

The US Postal Service certification process for Internet postage is a standardized, ten-stage process concluding with commercial release. Each stage requires US Postal Service review and authorization to proceed to the next stage of the certification process. The US Postal Service has no published timeline or estimated time to complete each of the first eight stages; however, each stage involves significant complexity and US Postal Service scrutiny and approval. In addition, each Internet postage vendor must complete three phases of beta testing during the ninth stage, with each phase requiring approximately 90 days of testing to complete. The substantial time commitment required of a potential IBIP vendor to complete the US Postal Service certification process is a significant barrier to entry for vendors seeking to compete in the Internet postage market.

The ten stages for US Postal Service certification process which are set forth at the US Postal Service Web site are as follows:

1. Letter of Intent                      6. US Postal Service Address
2. Non-Disclosure Agreements                Matching System CD-ROM Integration
3. Concept of Operations                 7. Product Submission/Testing
4. Software and Documentation            8. Product Infrastructure Testing
   Requirements Distribution)            9. Three Phase Beta Test Approval
5. Provider Infrastructure Plan             (Limited Distribution)
                                        10. Vendor Product Approval (Full
                                            Distribution)

Our Certification Progress and Commercial Release

In March 1997, we submitted our letter of intent to join the Information Based Indicia Program. From March 1997 through August 1998, we progressed through the first eight stages of the US Postal Service certification process. On August 24, 1998, the US Postal Service announced that we were approved for beta

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testing and our Internet postage service became the first software-based postage solution approved by the US Postal Service for market testing. Subsequent to US Postal Service approval for beta testing, we selected 25 users from approximately 1,000 beta test applications. Beta users are SOHO, other small business and home consumer users with an average mail volume of 30 to 500 pieces per month. Most of the beta users we selected do not have postage meters, but all have some form of Internet access. The beta test consists of three phases of testing; each phase requires approximately 90 days to complete and involves increasing standards. The following describes the planned three phase beta test that we are currently conducting:

Phase I. We have completed Phase I testing. All Phase I participants are located in the Washington, D.C. area. In this phase, we performed on-site software installations for all beta testers, including five US Postal Service users. User feedback has been largely positive and has focused on feature enhancements and US Postal Service regulations. We provided user support through an 800-number, online help, and printed or viewable manuals. We generated weekly usage reports and log files that were forwarded to the US Postal Service Beta Program Manager. Phase I users and data requirements continue for Phases II and III.

Phase II. We commenced Phase II testing on December 4, 1998. Phase II of our beta testing includes the expansion of the user base by an additional 475 users. These users are in the Washington, D.C. and San Francisco Bay Areas per US Postal Service specification. Installations in Phase II were executed via a software download over the Internet or with a CD-ROM provided to users. Our recruiting process for testers included use of our Web site, local advertising, SOHO lists and leveraging business development relationships. During Phase II beta testing, we have developed electronic file submission requirements, continued to strengthen our US Postal Service relationship, maintained heavy user focus and dialogue and continued to develop support strategy and infrastructure.

Phase III. We have not yet commenced Phase III testing. Phase III of beta testing includes expansion of the user base from 500 to 1,500 users in the Washington, D.C. and California regions. Phase III will provide us and the US Postal Service the opportunity to perform statistically significant market analyses to determine marketing and pricing strategies and to further stress test systems in preparation for a national launch.

US Postal Service Approval. Upon satisfactory completion of Phase III, the US Postal Service will publish and announce in the federal register the approval of the Stamps.com service for commercial release.

Commercial Release. Following US Postal Service approval, we will conduct a readiness review and then be subject for approximately 30 days to a US Postal Service-mandated limited launch of 10,000 customers following the initial commercial release of our service. After completion of the limited launch and to ensure the integrity of our service, we will conduct a controlled national launch of our service through our strategic distribution partners.

Our Strategic Distribution Partners

Our objective is to achieve significant market penetration through relationships with strategic partners in each of the four following categories:

. Web portals, content sites and Internet service providers, such as AOL;

. independent software vendors;

. PC, printer and peripherals manufacturers; and

. office/postal supplies vendors, such as Office Depot and Avery Dennison.

We believe we will benefit from these relationships by achieving positive brand association and a cost effective means of customer acquisition. We believe our partners can leverage their relationships with us to derive incremental revenue opportunities, including revenue-sharing arrangements with us, and provide additional value-added services to their customers.

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America Online. In December 1998, we entered into a two phase co-marketing and distribution agreement with AOL and are currently in the first phase, or Pre-Launch Phase, of the program. During the Pre-Launch Phase, we are collaboratively conducting development, testing, advertising and educational activities over the AOL network. The second phase of the Stamps.com/AOL program, or Launch Phase, becomes active when the US Postal Service approves the commercial release of our Internet postage service. Subject to certain conditions, the Launch Phase provides the following benefits to us:

. our software will be bundled exclusively on CD-ROMs that are distributed to AOL prospects and customers;

. our software CD-ROMs will exclusively be inserted in boxes with select products purchased through AOL Store;

. we will be featured prominently when AOL Keyword "stamps" is used;

. we will receive top positioning on the AOL Network postage category page; and

. we will collaboratively develop and present an exclusive three day Internet postage educational program for the AOL customer base.

The Launch Phase will also include a significant advertising impression commitment throughout select AOL properties, including the AOL Service, aol.com, Digital Cities and CompuServe.

Office Depot. In February 1999, we entered into a strategic partnership with Office Depot, Inc., a leading seller of office products. Our agreement with Office Depot provides us with a download link to sign up for our service available from the Office Depot Online Superstore, including above the fold positioning of the link, and contemplates a "point of purchase" advertisement campaign.

Avery Dennison. In March 1999, we entered into to a strategic distribution relationship with Avery Dennison Corporation, a leading supplier of adhesive materials, office products and label systems. Our agreement with Avery Dennison provides that through 1999 our service will be exclusively offered for download off the Avery Web Site and exclusively distributed on Avery Label Pro Software CD-ROMs through retail channels. During this time period, we will exclusively promote Avery Label products.

Dymo/CoStar. In March 1999, we entered into a strategic distribution relationship with Dymo, a leading label-making brand available in 160 countries worldwide. Dymo is part of Esselte, an international office and business supplies company, which recently acquired CoStar Corporation. CoStar is a leading manufacturer of specialty printers, software and supplies for printing labels, bar codes, receipts and identification badges. Our agreement with Dymo/CoStar provides that our software will be bundled on all software installation CD-ROMs included in all CoStar LabelWriter printer boxes. In addition, our software will be downloadable from the CoStar Web site.

Seiko Instruments. In March 1999, we entered into a strategic distribution agreement with Seiko Instruments USA Inc., a leading supplier and marketer of electronic components, consumer electronics, printer mechanisms, PC peripheral color printers, and specialty black and white printers. Our agreement with Seiko provides that our software will be bundled on software installation CD- ROMs included in all Seiko Smart Label Printer boxes. In addition, our software will be downloadable from the Seiko Web site.

Westvaco. In April 1999, we entered into a strategic distribution and co- development agreement with Westvaco Corporation, a leading manufacturer and supplier of paper materials, envelopes and other packaging products. Our agreement with Westvaco provides that our service be promoted on boxes of Westvaco's Columbian brand laser and inkjet envelopes sold through several channels, including office superstores. In addition, our service will be promoted on the Columbian brand Web site.

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Our Marketing and Sales

We intend to establish a strong brand name by allocating significant resources to our marketing and distribution efforts. We intend to distribute our postage printing software through our Web site. In addition, we will rely on traditional media and several other channels to achieve rapid distribution of our services, including:

Web Sites. We intend to work with high traffic Web sites including portals, commerce and content sites, and other high visibility Internet sites. This channel will provide the opportunity for users to download our proprietary software and access Internet postage services.

Affiliate Programs. We intend to leverage the traffic and customers of other online sites by offering revenue-sharing opportunities to affiliates that provide a link on their Web site to download our Internet postage software and access other related services. Affiliates can capitalize on the ability to offer new, value-added services and increase repeat visits to their site.

Preloaded/Bundled Hardware and Services. We intend to leverage relationships with vendors of hardware products, such as computers, printers and label makers; and with Internet service providers to offer our software to buyers of their products. Resellers can capitalize on the ability to promote new features on commodity, non-differentiated products and services.

Embedded Software. We intend to seek further partnerships with software publishing companies. Software packages that would benefit from our current services would include word processing, contact management, accounting, billing and retail software.

Postal Supplies. We will target companies in the postal supplies industry, including manufacturers of envelopes, labels, checks, forms, digital scales and postage meters.

Financial Services. We will seek distribution and co-branding opportunities with banks and brokerages by incorporating our Internet postage service into online banking and investing offered by financial service providers.

Direct Sales. We will target specific large industries or vertical markets where distributed use of the mail is prevalent, including insurance, travel and hospitality, financial services, law firms or other businesses where branch offices or agent organizational structures are common. We believe that significant benefits in the form of usability, convenience and cost savings to large corporate users may result from integrating our Internet postage service into the everyday work flow.

Customer Retention Programs. We believe we can increase customer retention by offering co-branded affinity marketing programs, such as frequent flyer miles, based on postage and other related expenditures. Further, we intend to create strong customer loyalty by offering discounts to our online store, as well as free peripherals and consumables, that are tied to customer postage volume.

Our Competition

The market for Internet postage products and services is new and we expect it to be intensely competitive. At present, three other IBIP vendors have hardware products available for beta testing. One of the vendors also has a software-based product in beta testing. However, we were the first participant authorized for beta testing by the US Postal Service with a software-based solution that does not require the purchase or use of additional hardware for a user's PC and printer set-up. We were approved for beta testing on August 25, 1998 and the other software-based product vendor announced their approval for the first stage of beta testing on March 29, 1999. As a result, we believe we have a significant development lead over our competitors given the length of time associated with security evaluation and beta testing to which the US Postal Service subjects all new product offerings. The following is a summary of our competitors in the IBIP program:

E-Stamp Corporation. E-Stamp is a developer and marketer of a hardware- based solution enabling users to generate postage transactions from their existing personal computers and printers. E-Stamp was the first company to gain US Postal Service approval for market testing of a hardware peripheral storage device

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identified as the Postal Service Device. E-Stamp is currently in beta testing for its PC Postal Security Device product and announced their approval for Phase II beta testing in July 1998.

Neopost. Neopost is a large French postage company with a small percentage of US market share in the traditional postage meter industry. Similar to E- Stamp, Neopost has developed an online postage product that requires a special purpose hardware device, and announced their approval for Phase I beta testing in September 1998. Neopost has also announced a software-based postage product for which it is seeking IBIP certification. On March 29, 1999, Neopost announced approval for their software based postage product for Phase I beta testing.

Pitney Bowes, Inc. Pitney Bowes is the current market leader in the traditional postage meter business and according to its most recent annual report had approximately $4.2 billion in revenues in 1998. Pitney Bowes has developed a product similar to E-Stamp which requires the use of a specialized peripheral hardware device for postage transactions. Pitney Bowes announced the approval of their hardware-based product for Phase II beta testing on March 9, 1999.

In addition to competing with IBIP vendors for market share of Internet postage sales, we will also compete with traditional postage methods such as stamps and metered mail. While we believe our Internet postage service provides benefits over traditional postage methods, we cannot be assured that Internet postage will be adopted by postage consumers on a commercial scale, if at all. These customers may continue to use traditional means to purchase postage, including purchasing postage from their local post office. Any failure by us or other IBIP vendors to displace traditional postage methods would seriously impact our ability to compete with providers of traditional postage.

Overall, we may not be able to maintain a competitive position against current or future competitors as they enter the markets in which we compete. This is particularly true with respect to competitors with greater financial, marketing, service, support, technical, intellectual property and other resources than us. Our failure to maintain a competitive position within the market could seriously harm our business, financial condition and results of operations. We believe that the principal competitive factors in our market include:

. US Postal Service product certification;

. Ability to successfully achieve commercial release of an Internet postage product;

. Brand recognition;

. Convenience;

. Ease of use;

. Price;

. Accountability;

. Security;

. Compatibility;

. Accuracy; and

. Integration.

For further discussion of the competitive risks and factors to be considering in making an investment in our common stock, see "Risk Factors--We face intense competition."

Our Technology

Our service is comprised of the following key components:

System Architecture. Our Internet postage servers are located in a high- security, off-site data center. Our application servers, which handle user requests, operate with proprietary server software and secure sockets

33

layer (SSL) encryption software to communicate with users. These same application servers create the indicia and process postage purchases using Federal Information Processing Standard (FIPS) 140-1 validated cryptographic processes that meet customer and US Postal Service security requirements.

Our service currently supports Windows 95, 98 and NT 4.0 with a Win32-based client application. The Win32-based client application enables a simpler, more intuitive interface for the user and provides the power and flexibility necessary to support a variety of label and envelope options. In addition, the client application employs a proprietary challenge-response authentication mechanism for additional security. The client application also includes specialized printing code to more accurately print indicia on envelopes with a wide range of printers and to support a variety of mailing label options.

Transaction Processing. Our transaction processing servers are a proprietary combination of secure, commercially available cryptography and standards-based Internet technologies to provide secure and reliable transaction throughput. Our system implements server-side, cryptographic hardware to exceed the highest government standard for security and data integrity currently in effect, FIPS 140-1 Level 4. The performance and scalability of our Internet postage system allows a wide range of users to process postage transactions through our Web site.

Database Processing. Our proprietary database servers are designed to complement industry leading database technologies and can be built to scale incrementally and seamlessly as needed.

Client Interoperability. Our system utilizes a lightweight, secure client module for authentication, communication and output control. The client module is designed to be the building block for Internet postage capabilities that are accessible from popular software applications. Our client module will be used by our postage application as well as add-ins for popular word processing applications and third party mailing and business systems.

Our Intellectual Property

We face substantial uncertainty regarding the impact that other parties' intellectual property positions will have on the Internet postage market. For example, on October 22, 1997, Pitney Bowes sent formal comment to the US Postal Service asserting that fifteen US patents issued to Pitney Bowes and four US patent applications filed by Pitney Bowes would be infringed by products meeting the Information Based Indicia Program specifications. On August 17, 1998, Pitney Bowes issued a press release stating that it holds dozens of US patents related to computer-based postage metering and that it intends to engage in discussions with other marketers of computer-based postal products to license Pitney Bowes technology. To that end, we are currently in license discussions with Pitney Bowes. We cannot predict the outcome of these discussions or the impact of Pitney Bowes' intellectual property claims on our business or the Internet postage market. If Pitney Bowes is able to successfully assert its claims against Internet postage vendors and if we do not enter into a license relationship with Pitney Bowes, our business could be adversely affected. For example, Pitney Bowes could obtain monetary relief from us or permanent or temporary injunctive relief against us .

As is customary with technology companies, from time to time, we may receive or become aware of correspondence claiming potential infringement of other parties' proprietary rights. We could incur significant costs and diversion of management time and resources to defend claims regardless of the validity of these claims. We may not have adequate resources to defend these claims, and any associated costs and distractions could have a material adverse effect on our business, financial condition and results of operations. As an alternative to litigation, we may seek licenses for other parties' intellectual property rights. We may not be successful in obtaining any necessary licenses on commercially reasonable terms, if at all.

We rely on a combination of patent, trade secret, copyright and trademark laws and contractual restrictions to establish and protect proprietary rights in our products, services, know-how and information. We have three issued US patents and have filed two patent applications in the United States. We have also applied

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for several trademarks and service marks. We plan to apply for other patents in the future. We may not receive patents for any of our patent applications. Even if patents are issued, claims covered by these patents may be substantially reduced from the claims covered by our patent applications. Moreover, any of our patents might be held invalid or unenforceable by a court. If our patents fail to protect our technology, our competitive position could be harmed. Even if our patents are upheld or are not challenged, third parties may develop alternative technologies or products without infringing our patents. We generally enter into confidentiality agreements with our employees, consultants and other third parties to control and limit access and disclosure of our proprietary information. These contractual arrangements or other steps taken to protect our intellectual property may not prove to be sufficient to prevent misappropriation of technology or deter independent third party development of similar technologies. Additionally, the laws of foreign countries may not protect our services or intellectual property rights to the same extent as do the laws of the United States.

Our Employees

As of March 31, 1999, we had 77 full time employees, of which 44 were employed in research and development, 16 were employed in network operations, 9 were employed in sales and marketing, and 8 were employed in administrative positions. None of our employees are represented by a labor union, and we consider our employee relations to be good. We intend to expand significantly our employee base in 1999. See "Risk Factors--We rely on a relatively new management team and need additional personnel to grow our business."

Our Properties

Our corporate headquarters is located in a 17,000 square foot facility in Santa Monica, California under a lease expiring on May 31, 1999. We also have a 5,000 square foot satellite research and development site in Irvine, California under a lease expiring in September 1999.

We are currently negotiating a lease for approximately 40,000 square feet of office space in Santa Monica, California. As a result, we will be relocating substantially all of our employees to new facilities in the near future. We may experience temporary interruptions in our normal operating activities during the moving process. If we experience more permanent disruptions related to our move, or if we are unable to complete the move in a timely manner, our development efforts and business could be harmed. See "Risk Factors--We may face disruptions in our operations during our relocation to a new facility in the near future."

Legal Proceedings

We are not currently involved in any legal proceedings, nor have we been involved in any such proceedings that has had or may have a significant effect on our financial position. We are not aware of any material legal proceedings pending against us. See "Risk Factors--We face potential claims of infringement on other parties' intellectual property rights."

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MANAGEMENT

Directors and Executive Officers

The following table sets forth certain information regarding our executive officers and directors as of March 31, 1999:

          Name            Age                                  Position
------------------------  --- ---------------------------------------------------------------------------
John M. Payne...........   43 Chief Executive Officer, President and Director
John W. LaValle.........   42 Chief Financial Officer, Senior Vice President of Operations, and Secretary
Michael D. Walther......   45 Senior Vice President, Network Operations
Timothy A. Von Kaenel...   33 Senior Vice President, Product Development
Douglas J. Walner.......   29 Vice President, Business Development
Jeffrey L. Green........   28 Vice President, Marketing
Candelario J. Andalon...   30 Corporate Controller
Thomas H. Bruggere (2)..   53 Chairman of the Board of Directors
Mohan P. Ananda.........   52 Director
David C. Bohnett (1)....   43 Director
Jeffrey J. Brown (1)....   38 Director
Thomas N. Clancy (2)....   41 Director
G. Bradford Jones (2)...   44 Director
Marvin Runyon (1).......   74 Director
Loren E. Smith..........   61 Director


(1) Member of the Audit Committee.

(2) Member of the Compensation Committee.

John M. Payne has been our Chief Executive Officer and President and a Director since October 1998, and was a consultant to us from May 1998 to October 1998. From June 1994 to January 1998, Mr. Payne served as the President and Chief Operating Officer and later the President and Chief Executive Officer of Airmedia, Inc., a wireless communications software and service provider. On April 15, 1999, Airmedia filed for Chapter 11 bankruptcy protection. From October 1992 to June 1994, Mr. Payne was the founding Chief Executive Officer of Fingertip Technologies, Inc., a software company. Previously, Mr. Payne co- founded and served as President of two specialty software firms, Financial Microsystems from June 1986 to October 1992, and LoanStar Computer from September 1979 to November 1986. Mr. Payne received his B.A. in Economics from the University of California, Irvine.

John W. LaValle has been our Chief Financial Officer, Senior Vice President of Operations, and Corporate Secretary since September 1998. From July 1997 to September 1998, Mr. LaValle served as Chief Financial Officer of Comcore Semiconductor, Inc., a semiconductor manufacturer. From November 1994 to July 1997, he was the Chief Financial Officer of Trikon Technologies a semiconductor equipment manufacturer. Previously, Mr. LaValle served as the Chief Financial Officer at Superconductor Technologies, a manufacturer of high temperature thin film superconductors used in cellular base station applications from September 1989 to November 1994. From April 1987 to September 1989, he was the Chief Financial Officer of PS Medical, a manufacturer of implantable neurosurgery products. From August 1984 to February 1987, Mr. LaValle served as a senior financial analyst for Chevron Corporation, and from December 1980 to September 1982, he served as a senior analyst for Andersen Consulting. Mr. LaValle received his B.A. in Government from Boston College and his M.B.A. from Harvard University.

Michael D. Walther has been our Senior Vice President of Network Operations since April 1999 after having served as a consultant since January 1999. From December 1997 to December 1999, Mr. Walther provided interim CEO/COO support to early stage venture companies. In June 1994, he co-founded Artios Corporation, an enterprise solutions company, and served as its President until December 1997. From October 1989 to June 1994, Mr. Walther served as President of AEI, a computer aided design software firm. Mr. Walther received his B.S. in Computer Science from the Texas A&M University--School of Commerce.

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Timothy A. Von Kaenel has been our Senior Vice President of Product Development since January 1999. From July 1998 to January 1999, Mr. Von Kaenel was Director, Product Management at IMA, a customer service software company. From July 1995 to July 1998, Mr. Von Kaenel was Senior Vice President of Product Development at AirMedia, Inc., a wireless communications software and service provider. On April 15, 1999, Airmedia filed for Chapter 11 bankruptcy protection. Before AirMedia, Mr. Von Kaenel was Vice President, Interactive Technologies at Advanced Media, a multimedia software and interactive services company. In 1990, he founded and was President of Vision Imaging, an international developer and publisher of multimedia software products, which was later acquired by Advanced Media. Mr. Von Kaenel received his B.A. in Economics and M.B.A. from the University of California, Irvine.

Douglas J. Walner has been our Vice President of Business Development since September 1998, and from March 1998 to August 1998, Mr. Walner served as a business development and strategic relationship consultant. From January 1996 to March 1998, Mr. Walner was the Director of Business Development at CyberMedia, a software company. Mr. Walner served as OEM Sales Manager at Airmedia, Inc., from April 1994 to January 1996. Prior to 1994, Mr. Walner served as a Program Manager at Mortgage Capital Group/City National Bank. Mr. Walner received his B.A. in History from Tulane University.

Jeffrey L. Green has been our Vice President of Marketing since co-founding Stamps.com in September 1996. From August 1992 to May 1995, Mr. Green served as an account executive at Ziff Davis, Inc., a publishing company. Mr. Green also worked at Hewlett Packard in Product Marketing in 1996 while attending the Anderson School at UCLA. Mr. Green received his B.A. in Political Science from Dartmouth and his M.B.A. from UCLA.

Candelario J. Andalon has been our Corporate Controller since October 1998. From September 1991 to September 1998, Mr. Andalon served in various capacities at Ernst & Young LLP, most recently as Manager in the firm's Technology, Communications and Entertainment group. Mr. Andalon received his B.S. degree in Accounting from Loyola Marymount University and is a Certified Public Accountant.

Thomas H. Bruggere has been our Chairman of the Board of Directors since April 1998. Since 1994, Mr. Bruggere has been a private investor. In 1995 and 1996, Mr. Bruggere was the Democratic Nominee for the US Senate from Oregon. Mr. Bruggere founded Mentor Graphics, a semiconductor design consulting firm, in 1981 and served as its Chief Executive Officer until 1994. Mr. Bruggere also serves on the Board of Directors of Open Market, Inc., a software development company, and several privately-held companies. Mr. Bruggere received his B.S. in Mathematics from UC Santa Barbara, his M.S. in Computer Science from the University of Wisconsin and his M.B.A. from Pepperdine University.

Mohan P. Ananda has been a Director since January 1998. Mr. Ananda is a founder and currently serves as the Chief Executive Officer and Chairman of the Board of AmazingHitz.com, Inc., an Internet-based entertainment company. From January 1997 to October 1998, Mr. Ananda served as our Chief Executive Officer. From June 1986 to December 1996, Mr. Ananda was a partner of Ananda & Krause, a law firm. Mr. Ananda also serves on the Board of Directors of other privately- held companies. Mr. Ananda received his B.S. in Engineering from Coimbature Institute of Technology in India, M.S. his in Aeronautics from the California Institute of Technology, his Ph.D. in Astrodynamics and Control from UCLA, and his J.D. from the University of West Los Angeles.

David C. Bohnett has been a Director since March 1999. Currently, Mr. Bohnett serves as Chairman of the Board and Secretary of GeoCities, Inc., an Internet hosting company, which he founded in November 1994. From November 1994 to April 1998, Mr. Bohnett also served as GeoCities' Chief Executive Officer and President. From November 1994 to November 1997, Mr. Bohnett also served as GeoCities' Chief Financial Officer. Prior to founding GeoCities, from February 1990 to May 1994, Mr. Bohnett served as Director of Product Marketing at Goal Systems, which merged with LEGENT, a software company. From 1988 to 1990, Mr. Bohnett was Chief Financial Officer of Essential Software, which merged with Goal Systems. Mr. Bohnett also is a director of GeoCities, Inc. and several private companies. Mr. Bohnett was elected to our Board of Directors as a representative of the class of Series C investors pursuant to a voting agreement which will terminate upon the closing of this offering. Mr. Bohnett received his B.S. degree in Business Administration from the University of Southern California and his M.B.A. degree in Finance from the University of Michigan.

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Jeffrey J. Brown has been a Director since February 1998. In June 1993, Mr. Brown founded and, since that time, he has been a director, executive officer and shareholder of Forrest Binkley & Brown Venture Co., the general partner of Forrest Binkley & Brown L.P., the Managing Partner of SBIC Partners. Mr. Brown is also a founder, director, executive officer and shareholder of Forrest Binkley & Brown Venture Advisor Co., an affiliate of SBIC Partners. From 1987 to 1992, Mr. Brown served in various executive capacities at Security Pacific Venture Capital Group. From April 1992 until June 1993, Mr. Brown acted as Senior Vice President of BankAmerica Venture Capital Group. Mr. Brown is a director of Golden State Vintners, Inc., a supplier of premium bulk wines and wine processing services, and serves on the boards of a number of private companies. Mr. Brown was elected to our Board of Directors as a representative of SBIC Partners pursuant to a voting agreement which will terminate upon the closing of this offering. Mr. Brown received his B.S. in Mathematics from Willamette University and his M.B.A. from the Stanford Graduate School of Business.

Thomas N. Clancy has been a Director since February 1998. Mr. Clancy has been a Venture Partner at Enterprise Partners Venture Capital since February 1997. Prior to joining Enterprise Partners in September 1996, Mr. Clancy was a Partner at Technical Resource Connection, now Perot Systems, a provider of information technology services, from March 1996 to July 1996. Previously, Mr. Clancy served as the Chief Executive Officer at Expersoft from May 1994 to January 1996 and as Vice President of Product Marketing at Expersoft from October 1993 to May 1994. From March 1983 to November 1991, Mr. Clancy worked at Citibank in engineering management and product development. Mr. Clancy serves on the board of a number of private companies. Mr. Clancy was elected to our Board of Directors as a representative of Enterprise Partners pursuant to a voting agreement which will terminate upon the closing of this offering. Mr. Clancy received his Computer and Systems Engineering degree from Rensselaer Polytechnic Institute in New York.

G. Bradford Jones has been a Director since October 1998. Mr. Jones is currently a General Partner at Brentwood Venture Capital, which he joined in 1981. Mr. Jones also currently serves on the board of directors of Onyx Acceptance Corporation, a specialized consumer finance company, Interpore International, a medical device company, and ISOCOR, a software developer, and several privately-held companies. Mr. Jones was elected to our Board of Directors as a representative of Brentwood Associates pursuant to a voting agreement which will terminate upon the closing of this offering. Mr. Jones received his B.S. in Chemistry from Harvard University, his Masters degree in Physics from Harvard University and his J.D./M.B.A. from Stanford University.

Marvin Runyon has been a Director since February 1999. From 1992 to 1999, Mr. Runyon served as Postmaster General of the United States. Prior to joining the US Postal Service, he served as Chairman of the Tennessee Valley Authority from 1988 to 1992. From 1980 to 1988, Mr. Runyon was the founding President and CEO of Nissan Motor Manufacturing Corporation U.S.A. Previously, Mr. Runyon spent 37 years at Ford Motor Co., leaving in 1980 with the position of Vice President, Body and Assembly Operations. Mr. Runyon serves as a board member of Genesis Direct, Inc., a specialty retailer. Mr. Runyon received his B.S. from Texas A&M University.

Loren E. Smith has served as a Director since February 1999. Since November 1996, Mr. Smith has been a Principal at Threshold Management, a consulting firm that specializes in strategic growth management for leading businesses in a diverse range of industries. He was also employed as a Principal at Threshold Management from July 1993 to October 1994. From October 1994 to October 1996, he served as Senior Vice President and Chief Marketing Officer of the US Postal Service. In 1985, Mr. Smith joined Citibank and was responsible for establishing the national marketing organization of its Consumer Services Group. From 1975 to 1995, he founded Threshold Management. Previously, Mr. Smith held various management positions at General Foods Corporation and Colgate Palmolive Co. Mr. Smith received his A.B. degree in Economics from Albion College and his M.B.A. from the University of Michigan.

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Board Committees

The Board has established a Audit Committee to meet with and consider suggestions from members of management and our internal accounting personnel, as well as our independent accountants, concerning our financial operations. The Audit Committee also has the responsibility to review our audited financial statements and consider and recommend the employment of, and approve the fee arrangements with, independent accountants for both audit functions and for advisory and other consulting services. The Audit Committee is currently comprised of Messrs. Runyon, Bohnett and Brown. The Board has also established a Compensation Committee to review and approve the compensation and benefits for our key executive officers, administer our stock purchase, equity incentive and stock option plans and make recommendations to the Board regarding such matters. The Compensation Committee is currently comprised of Messrs. Bruggere, Clancy and Jones.

Compensation Committee Interlocks and Insider Participation

The Compensation Committee consists of Messrs. Bruggere, Clancy and Jones. Neither of these individuals was an employee of ours at any time since our formation. None of our executive officers serves as a member of the board of directors or compensation committee of any entity that has one or more executive officers serving as a member of our Board of Directors or Compensation Committee.

Director Compensation and Other Arrangements

Our directors receive no cash remuneration for serving on the Board of Directors or any board committee. In March and February, 1999, Messrs. Bohnett, Runyon and Smith were each granted an option to purchase 72,000 shares of common stock. The options were granted at fair market value on the date of grant and vest ratably over a three year periods. In April 1999, Messrs. Clancy, Jones and Brown were each granted an option to purchase 24,000 shares of common stock. These options were granted at fair market value on the date of grant and vest in full on the first anniversary of the grant. In addition, directors are reimbursed for all reasonable expenses incurred by them in attending Board and Committee meetings.

In February 1999 we entered into a three-year consulting agreement with Loren Smith whereby he will provide marketing and strategic planning services. Mr. Smith also agreed to serve as a director on our Board of Directors and to serve as a member on a board committee. In exchange for these services, we will compensate Mr. Smith $120,000 per year, and in consideration of his consulting services, grant him an option to purchase 90,000 shares of our common stock at $0.50 per share.

Directors who are also our employees are eligible to receive options and be issued shares of common stock directly under our 1999 Stock Incentive Plan. Non-employee directors will also receive automatic option grants pursuant to our 1999 Stock Incentive Plan, subject to certain conditions. See "--1999 Stock Incentive Plan."

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Executive Compensation

The following summary compensation table sets forth information concerning cash and non-cash compensation earned during the fiscal year ended December 31, 1998 by our Chief Executive Officer and each of our other four highest paid executive officers whose total compensation exceeded or would have exceeded $100,000 during such year had such officers provided services to us for the entire fiscal year (the "Named Executive Officers").

Summary Compensation Table for Fiscal Year 1998

                                                                Long Term
                         Annual Compensation                   Compensation
                         --------------------                  ------------
                                                                Securities
   Name and Principal                           Other Annual    Underlying     All Other
       Positions         Salary ($) Bonus ($) Compensation ($) Options (#)  Compensation ($)
   ------------------    ---------- --------- ---------------- ------------ ----------------
John M. Payne
 President and Chief
   Executive
 Officer (October 1998
   to present)..........   27,897        --          --               --        112,800(1)
John W. LaValle
 Chief Financial Officer
   and Senior
 Vice President of
   Operations...........   42,000        --          --          263,868             --
Mohan P. Ananda
 Chief Executive Officer
   and
 President (January 1998
   to October 1998).....   85,500        --          --               --             --
Douglas J. Walner
 Vice President of
   Business
 Development............   35,000    25,000          --          244,238          7,434(2)


(1) Represents aggregate payments to Mr. Payne for consulting services performed during the period from May 1998 to October 1998.

(2) Represents aggregate payments to Mr. Walner for consulting services performed during the period from August 1998 to September 1998.

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Stock Options Granted During Fiscal Year 1998

The following table sets forth certain information regarding options to purchase common stock granted to Named Executive Officers during the fiscal year ended December 31, 1998. No stock appreciation rights were granted to such individuals during such year.

                                                                                          Potential
                                                                                         Realizable
                                                                                          Value at
                                                                                       Assumed Annual
                                                                                       Rates of Stock
                                                                                        Appreciation
                                                                                         For Option
                                               Individual Grants                           Term(4)
                         ------------------------------------------------------------- ---------------
                             Number of          Percentage of
                             Securities     Total Options Granted Exercise
                         Underlying Options     to Employees      Price Per Expiration
          Name               Granted(1)          in 1998(2)       Share(3)     Date       5%     10%
          ----           ------------------ --------------------- --------- ---------- ------- -------
John W. LaValle.........      263,868               16.9%           $0.10    9/24/08   $16,594 $42,054
Douglas J. Walner.......      244,238               15.6%           $0.10    8/20/08   $15,360 $38,925


(1) Each option listed in the table was granted under our 1998 Stock Plan. The options shown in this table are immediately exercisable and become vested, at a minimum, in five equal annual installments from the date of the option grant. The Compensation Committee may, in its discretion, extend certain features of the 1999 Stock Incentive Plan to options granted pursuant to the 1998 Stock Plan. As a result, certain option shares granted pursuant to the 1998 Stock Plan will fully vest upon our acquisition by merger or asset sale, unless such option is assumed by the successor corporation, or otherwise continued. Also, upon such merger or asset sale, any outstanding rights of repurchase will automatically terminate with respect to unvested shares unless such rights are assigned to the acquiring entity. See "--1999 Stock Incentive Plan."
(2) During the fiscal year ended December 31, 1998, we granted options to purchase an aggregate of 1,564,981 shares of common stock.
(3) All options were granted at an exercise price equal to the fair market value of our common stock as determined by our Board of Directors on the date of grant. The exercise price may be paid in cash, check, promissory note, shares of our common stock valued at fair market value on the exercise date or a cashless exercise procedure involving a same-day sale off the purchased shares.
(4) Potential realizable values are net of exercise price, but before the payment of taxes associated with exercise. Amounts represent hypothetical gains that could be achieved for the respective options if exercised at the end of the option term. The 5% and 10% assumed annual rates of compounded stock price appreciation are mandated by rules of the Commission and do not represent our estimate or projection of our future common stock prices. These amounts represent certain assumed rates of appreciation in the value of the common stock from the fair market value on the date of grant. Actual gains, if any, on stock option exercises are dependent on the future performance of the common stock and overall stock market conditions. The amounts reflected in the table may not necessarily be achieved.

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Aggregated Option Exercises in Fiscal Year Ended December 31, 1998 and Year-End Option Values

The following table sets forth certain information concerning options to purchase common stock exercised by the Named Executive Officers during 1998 and the number and value of unexercised options held by each of the Named Executive Officers at December 31, 1998.

                                                    Number of
                                                   Securities       Value of
                                                   Underlying    Unexercised In-
                                                   Unexercised      the-Money
                                                   Options at      Options at
                                                  December 31,    December 31,
                                                     1998(1)         1998(2)
                                                 --------------- ---------------
                      Name                       Vested Unvested Vested Unvested
                      ----                       ------ -------- ------ --------
John W. LaValle (3).............................    0   263,868     0   $105,547
Douglas J. Walner (3)...........................    0   244,238     0   $ 97,695


(1) Each option listed in the table was granted under our 1998 Stock Plan. The options shown in this table are immediately exercisable and become vested, at a minimum, in five annual installments from the date of the option grant. The Compensation Committee may, in its discretion, extend certain features of the 1999 Stock Incentive Plan to options granted pursuant to the 1998 Stock Plan. As a result, certain option shares granted pursuant to the 1998 Stock Plan will fully vest upon our acquisition by merger or asset sale, unless such option is assumed by the successor corporation, or otherwise continued. Also, upon such merger or asset sale, any outstanding rights of repurchase will automatically terminate with respect to unvested shares unless such rights are assigned to the acquiring entity. See "-- 1999 Stock Incentive Plan."
(2) There was no public trading market for the common stock as of December 31, 1998. Accordingly, these values have been calculated by subtracting the exercise price from the fair market value of the underlying securities as determined by the Board of Directors.
(3) The options, granted pursuant to our 1998 Stock Plan, are immediately exercisable. These options vest ratably over four years, with 1/4 of the options becoming vested one year after the grant date and 1/48 each month thereafter.

Employment Agreements and Change in Control Arrangements

John M. Payne has entered into a letter agreement, effective as of October 29, 1998, pursuant to which Mr. Payne serves as our President and Chief Executive Officer. Mr. Payne's 1999 compensation includes a base salary of $210,000 per year and a potential bonus of $90,000 if certain performance targets are satisfied. In addition, we gave Mr. Payne benefits that we make available to our employees in comparable positions, and upon his execution of the letter agreement, we sold 1,000,000 shares of our common stock to him at $0.10 per share, the fair market value on the purchase date. Mr. Payne is an at-will employee and his employment may be terminated at any time by him or by us. If Mr. Payne's employment is constructively terminated or terminated by us or a successor entity involuntarily within 12 months following a change in control, or if we terminate or constructively terminate Mr. Payne's employment for any reason other than for cause, he will be entitled to receive monthly installments of his base salary for six months and all of his unvested stock will become immediately vested. After two years of employment, such severance period will increase to nine months, and after three years of service, the severance period will increase to one year.

John W. LaValle entered into a letter agreement, effective as of August 16, 1998, pursuant to which Mr. LaValle serves as our Chief Financial Officer and Senior Vice President. Pursuant to this agreement, Mr. LaValle receives a base salary of $156,000 per year. We granted Mr. LaValle an option to purchase 263,868 shares of common stock at $0.10 per share, the fair market value on the grant date. In addition, Mr. LaValle receives standard medical and dental benefits available to our other employees. Mr. LaValle is an at-will employee and his employment can be terminated at anytime by him or by us. If Mr. LaValle's employment is constructively terminated or terminated by us or a successor entity within 12 months following a change in control, all of his unvested stock will become immediately vested.

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Mohan P. Ananda entered into an employment agreement, effective as of January 20, 1998, pursuant to which Mr. Ananda served as our President, Chief Executive Officer and the Chairman of the Board of Directors. Mr. Ananda received an initial base salary of $60,000, which was increased to $120,000 per year in October 1998. In addition, we sold 1,448,397 shares of our common stock to Mr. Ananda at $0.02 per share. Mr. Ananda has ceased active involvement with our operations, but he continues to be a director on our Board of Directors.

In April 1999, we amended our 1998 Stock Plan to adopt a change in control provision. As a result of this provision, should any optionee have their service involuntarily terminated within eighteen (18) months following a Corporate Transaction in which his or her options are assumed by the successor corporation and do not otherwise accelerate at that time, then those options will accelerate and become fully exercisable for all of the option shares as fully-vested shares of Common Stock upon such involuntary termination. A "Corporate Transaction" under the 1998 Stock Plan is defined as a merger or consolidation in which securities possessing more than 50% of the total combined voting power of our outstanding securities are transferred to a person or persons different from those who held those securities immediately prior to such transaction, or the sale, transfer or other disposition of all or substantially all of our assets in complete liquidation of us. "Involuntary Termination" is defined under the 1998 Stock Plan as the optionee's involuntary dismissal or discharge by us for reasons other than misconduct, or the optionee's voluntary resignation following (a) a change in his or her position with us which materially reduces his or her responsibilities or (b) a reduction in his or her level of compensation (including base salary, fringe benefits and any non-discretionary and objective-standard incentive payment or bonus award) by more than 15% or (c) a relocation of the optionee's place of employment by more than 50 miles, and such change, reduction or relocation is effected by us without the optionee's consent.

Douglas J. Walner is subject to an agreement which partially accelerates the vesting of his options upon a change in control and his subsequent termination.

Our 1999 Stock Incentive Plan will include change in control provisions which may result in the accelerated vesting of outstanding option grants and stock issuances. See "--1999 Stock Incentive Plan--Change in Control."

1999 Stock Incentive Plan

Introduction. The 1999 Stock Incentive Plan is intended to serve as the successor program to our 1998 Stock Plan. The 1999 plan was adopted by the board in 1999 and approved by the stockholders in 1999. The 1999 plan will become effective when the underwriting agreement for this offering is signed. At that time, all outstanding options under our existing 1998 plan will then be transferred to the 1999 plan, and no further option grants will be made under the 1998 plan. The transferred options will continue to be governed by their existing terms, unless our compensation committee decides to extend one or more features of the 1999 plan to those options. Except as otherwise noted below, the transferred options have substantially the same terms as will be in effect for grants made under the discretionary option grant program of our 1999 stock plan.

Share Reserve. shares of our common stock have been authorized for issuance under the 1999 plan. This share reserve consists of the number of shares we estimate will be carried over from the 1998 plan plus an additional increase of shares. The share reserve under our 1999 plan will automatically increase on the first trading day in January each year, beginning with calendar year 2000, by an amount equal to percent ( %) of the total number of shares of our common stock outstanding on the last trading day of December in the prior year, but in no event will this annual increase exceed shares. In addition, no participant in the 1999 plan may be granted stock options or direct stock issuances for more than 1,000,000 shares of common stock in total in any calendar year.

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Programs. Our 1999 plan has five separate programs:

. the discretionary option grant program, under which eligible individuals in our employ may be granted options to purchase shares of our common stock at an exercise price not less than the fair market value of those shares on the grant date;

. the stock issuance program, under which eligible individuals may be issued shares of common stock directly, upon the attainment of performance milestones or upon the completion of a period of service or as a bonus for past services;

. the salary investment option grant program, under which our executive officers and other highly compensated employees may be given the opportunity to apply a portion of their base salary to the acquisition of special below market stock option grants;

. the automatic option grant program, under which option grants will automatically be made at periodic intervals to eligible non-employee board members to purchase shares of common stock at an exercise price equal to the fair market value of those shares on the grant date; and

. the director fee option grant program, under which our non-employee board members may be given the opportunity to apply a portion of any retainer fee otherwise payable to them in cash for the year to the acquisition of special below-market option grants.

Eligibility. The individuals eligible to participate in our 1999 plan include our officers and other employees, our board members and any consultants we hire.

Administration. The discretionary option grant and stock issuance programs will be administered by our compensation committee. This committee will determine which eligible individuals are to receive option grants or stock issuances under those programs, the time or times when the grants or issuances are to be made, the number of shares subject to each grant or issuance, the status of any granted option as either an incentive stock option or a nonstatutory stock option under the federal tax laws, the vesting schedule to be in effect for the option grant or stock issuance and the maximum term for which any granted option is to remain outstanding. The compensation committee will also have the authority to select the executive officers and other highly compensated employees who may participate in the salary investment option grant program in the event that program is put into effect for one or more calendar years.

Plan Features. Our 1999 plan will include the following features:

. The exercise price for any options granted the plan may be paid in cash or in shares of our common stock valued at fair market value on the exercise date. The option may also be exercised through a same-day sale program without any cash outlay by the optionee.

. The compensation committee will have the authority to cancel outstanding options under the discretionary option grant program, including any transferred options from our 1998 plan, in return for the grant of new options for the same or different number of option shares with an exercise price per share based upon the fair market value of our common stock on the new grant date.

. Stock appreciation rights may be issued under the discretionary option grant program. These rights will provide the holders with the election to surrender their outstanding options for a payment from us equal to the fair market value of the shares subject to the surrendered options less the exercise price payable for those shares. We may make the payment in cash or in shares of our common stock. None of the options under our 1998 plan have any stock appreciation rights.

Change in Control. The 1999 plan will include the following change in control provisions which may result in the accelerated vesting of outstanding option grants and stock issuances:

. In the event that we are acquired by merger or asset sale, each outstanding option under the discretionary option grant program which is not to be assumed by the successor corporation will

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immediately become exercisable for all the option shares, and all outstanding unvested shares will immediately vest, except to the extent our repurchase rights with respect to those shares are to be assigned to the successor corporation.

. The compensation committee will have complete discretion to grant one or more options which will become exercisable for all the option shares in the event those options are assumed in the acquisition but the optionee's service with us or the acquiring entity is subsequently terminated. The vesting of any outstanding shares under our 1999 plan may be accelerated upon similar terms and conditions.

. The compensation committee may grant options and structure repurchase rights so that the shares subject to those options or repurchase rights will immediately vest in connection with a successful tender offer for more than fifty percent of our outstanding voting stock or a change in the majority of our board through one or more contested elections. Such accelerated vesting may occur either at the time of such transaction or upon the subsequent termination of the individual's service.

. The options currently outstanding under our 1998 plan will immediately vest in the event we are acquired and the acquiring company does not assume those options. Any options which are so assumed will immediately vest upon an involuntary termination of the optionee's employment within 18 months after the acquisition.

Salary Investment Option Grant Program. In the event the compensation committee decides to put this program into effect for one or more calendar years, each of our executive officers and other highly compensated employees may elect to reduce his or her base salary for the calendar year by an amount not less than $10,000 nor more than $50,000. Each selected individual who makes such an election will automatically be granted, on the first trading day in January of the calendar year for which his or her salary reduction is to be in effect, an option to purchase that number of shares of common stock determined by dividing the salary reduction amount by two-thirds of the fair market value per share of our common stock on the grant date. The option will have exercise price per share equal to one-third of the fair market value of the option shares on the grant date. As a result, the option will be structured so that the fair market value of the option shares on the grant date less the exercise price payable for those shares will be equal to the amount of the salary reduction. The option will become exercisable in a series of twelve equal monthly installments over the calendar year for which the salary reduction is to be in effect.

Automatic Option Grant Program. Each individual who first becomes a non- employee board member at any time after the effective date of this offering will receive an option grant for shares of common stock on the date such individual joins the board. In addition, on the date of each annual stockholders meeting held after the effective date of this offering, each non- employee board member who is to continue to serve as a non-employee board member, including each of our current non-employee board members, will automatically be granted an option to purchase shares of common stock, provided such individual has served on the board for at least six months.

Each automatic grant will have an exercise price per share equal to the fair market value per share of our common stock on the grant date and will have a term of 10 years, subject to earlier termination following the optionee's cessation of board service. The option will be immediately exercisable for all of the option shares; however, we may repurchase, at the exercise price paid per share, any shares purchased under the option which are not vested at the time of the optionee's cessation of board service. The shares subject to each annual automatic grant will be fully-vested when granted. The shares subject to each initial -share automatic option grant will vest in a series of successive equal monthly installments upon the optionee's completion of each month of board service over the month period measured from the grant date. However, the shares will immediately vest in full upon certain changes in control or ownership or upon the optionee's death or disability while a board member.

Director Fee Option Grant Program. If this program is put into effect in the future, then each non-employee board member may elect to apply all or a portion of any cash retainer fee for the year to the acquisition of a below- market option grant. The option grant will automatically be made on the first trading day

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in January in the year for which the non-employee board member would otherwise be paid the cash retainer fee in the absence of his or her election. The option will have an exercise price per share equal to one-third of the fair market value of the option shares on the grant date, and the number of shares subject to the option will be determined by dividing the amount of the retainer fee applied to the program by two-thirds of the fair market value per share of our common stock on the grant date. As a result, the option will be structured so that the fair market value of the option shares on the grant date less the exercise price payable for those shares will be equal to the portion of the retainer fee applied to that option. The option will become exercisable in a series of twelve equal monthly installments over the calendar year for which the election is in effect. However, the option will become immediately exercisable for all the option shares upon the death or disability of the optionee while serving as a board member.

Additional Program Features. Our 1999 plan will also have the following features:

. Outstanding options under the salary investment and director fee option grant programs will immediately vest if we are acquired by a merger or asset sale or if there is a successful tender offer for more than 50% of our outstanding voting stock or a change in the majority of our board through one or more contested elections.

. Limited stock appreciation rights will automatically be included as part of each grant made under the salary investment option grant program and the automatic and director fee option grant programs, and these rights may also be granted to one or more officers as part of their option grants under the discretionary option grant program. Options with this feature may be surrendered to us upon the successful completion of a hostile tender offer for more than 50% of our outstanding voting stock. In return for the surrendered option, the optionee will be entitled to a cash distribution from us in an amount per surrendered option share based upon the highest price per share of our common stock paid in that tender offer.

. The board may amend or modify the 1999 plan at any time, subject to any required stockholder approval. The 1999 plan will terminate no later than , 2009.

1999 Employee Stock Purchase Plan

Introduction. Our 1999 Employee Stock Purchase Plan was adopted by the board in 1999 and approved by the stockholders in 1999. The plan will become effective immediately upon the signing of the underwriting agreement for this offering. The plan is designed to allow our eligible employees and the eligible employees our participating subsidiaries to purchase shares of common stock, at semi-annual intervals, with their accumulated payroll deductions.

Share Reserve. shares of our common stock will initially be reserved for issuance. The reserve will automatically increase on the first trading day in January each year, beginning in calendar year 2000, by an amount equal to percent ( %) of the total number of outstanding shares of our common stock on the last trading day in December in the prior year. In no event will any such annual increase exceed shares.

Offering Periods. The plan will have a series of successive offering periods, each with a maximum duration of 24 months. The initial offering period will start on the date the underwriting agreement for the offering covered is signed and will end on the last business day in 2001. The next offering period will start on the first business day in 2001, and subsequent offering periods will set by our compensation committee.

Eligible Employees. Individuals scheduled to work more than 20 hours per week for more than 5 calendar months per year may join an offering period on the start date or any semi-annual entry date within that period. Semi-annual entry dates will occur on the first business day of and each year. Individuals who become eligible employees after the start date of an offering period may join the plan on any subsequent semi- annual entry date within that offering period.

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Payroll Deductions. A participant may contribute up to 15% of his or her cash earnings through payroll deductions, and the accumulated deductions will be applied to the purchase of shares on each semi-annual purchase date . The purchase price per share will be equal to 85% of the fair market value per share on the participant's entry date into the offering period or, if lower, 85% of the fair market value per share on the semi-annual purchase date.

Semi-annual purchase dates will occur on the last business day of and each year. In no event, however, may any participant purchase more than shares on any purchase date, and not more than shares may be purchased in total by all participants on any purchase date.

Reset Feature. If the fair market value per share of our common stock on any purchase date is less than the fair market value per share on the start date of the two-year offering period, then that offering period will automatically terminate, and a new two-year offering period will begin on the next business day. All participants in the terminated offering will be transferred to the new offering period.

Change in Control. Should we be acquired by merger or sale of substantially all of our assets or more than fifty percent of our voting securities, then all outstanding purchase rights will automatically be exercised immediately prior to the effective date of the acquisition. The purchase price will be equal to 85% of the market value per share on the participant's entry date into the offering period in which an acquisition occurs or, if lower, 85% of the fair market value per share immediately prior to the acquisition.

Plan Provisions. The following provisions will also be in effect under the plan:

. The plan will terminate no later than the last business day of 2009.

. The board may at any time amend, suspend or discontinue the plan. However, certain amendments may require stockholder approval.

Limitation on Liability and Indemnification Matters

The certificate of incorporation that we will adopt immediately prior to the closing of this offering provides that, except to the extent prohibited by the Delaware General Corporation Law, our directors will not be personally liable to us or our stockholders for monetary damages for any breach of fiduciary duty as directors. Under the Delaware General Corporation Law, the directors have a fiduciary duty to Stamps.com which is not eliminated by this provision of the certificate of incorporation and, in appropriate circumstances, equitable remedies such as injunctive or other forms of nonmonetary relief will remain available. In addition, each director will continue to be subject to liability under the Delaware law for breach of the director's duty of loyalty, for acts or omissions which are found by a court of competent jurisdiction to be not in good faith or which involve intentional misconduct, or knowing violations of law, for actions leading to improper personal benefit to the director, and for payment of dividends or approval of stock repurchases or redemptions that are prohibited by Delaware law. This provision also does not affect the director's responsibilities under any other laws, such as the federal securities laws or state or federal environmental laws. We have obtained liability insurance for our officers and directors.

Section 145 of the Delaware law empowers a corporation to indemnify its directors and officers and to purchase insurance with respect to liability arising out of their capacity or status as directors and officers, provided that this provision shall not eliminate or limit the liability of a director:
(a) for any breach of the director's duty of loyalty to the corporation or its stockholders, (b) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (c) arising under Section 174 of the Delaware law, or (d) for any transaction from which the director derived an improper personal benefit. The Delaware law provides further that the indemnification permitted thereunder shall not be deemed exclusive of any other rights to which the directors and officers may be entitled under the corporation's bylaws, any agreement, a vote of stockholders or otherwise. The certificate of incorporation provides that we shall, to the

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fullest extent permitted by the Delaware law, indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding (whether civil, criminal, administrative or investigative) by reason of the fact that such person is or was a director or officer, or is or was serving at our request as a director or officer of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise, against expenses (including attorneys' fees), judgements, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with such action, suit or proceeding.

We plan to enter into indemnification agreements with our directors and certain of our officers containing provisions that may require us, among other things, to indemnify such directors and officers against certain liabilities that may arise by reason of their status or service as directors or officers (other than liabilities arising from willful misconduct of a culpable nature), to advance their expenses incurred as a result of any proceeding against them as to which they could be indemnified, and to obtain directors' and officers' liability insurance if maintained for other directors or officers.

At present, there is no pending litigation or proceeding involving any director, officer, employee or agent as to which indemnification will be required or permitted. We are not aware of any threatened litigation or proceeding which may result in a claim for such indemnification.

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CERTAIN TRANSACTIONS

Since our inception in January 1998, there has not been, nor is there currently proposed, any transaction to which we are a party in which the amount involved exceeded $60,000 and in which any director, executive officer, holder of more than 5% of our common stock or any member of the immediate family of any of the foregoing persons had or will have a direct or indirect material interest other than (1) compensation agreements and other agreements and (2) the transactions described below.

We have issued an aggregate of 4,600,650 shares of common stock for an aggregate purchase price of $193,760.00. John M. Payne, our President and Chief Executive Officer, purchased 1,000,000 shares of common stock in November 1998 for an aggregate purchase price of $100,000.00, which amount includes a note payable to Stamps.com for $99,000.00. Thomas Bruggere, our Chairman of the Board of Directors, purchased 325,650 shares of common stock in October 1998 and December 1998 for an aggregate purchase price of $28,460.00. Mohan Ananda, a member of our board of directors, purchased 1,448,397 shares of common stock in January 1998 for an aggregate purchase price of $28,967.94. As payment of the purchase price, Mr. Ananda assigned certain intellectual property rights to us and received an exclusive, worldwide, fully paid license back from us to use certain patents in a restricted field of use. In January 1998, we also sold 282,662 shares of common stock to each of our co-founders, James McDermott, Ari Engelberg and Jeffrey Green, for an aggregate purchase price of $16,959.72, which amount includes $9,000.00 in notes payable to Stamps.com.

We have issued, in private placement transactions, shares of preferred stock as follows:

. an aggregate of 3,762,500 shares of Series A preferred stock at $0.40 per share in February 1998;

. an aggregate of 6,020,000 shares of Series B preferred stock at $0.75 per share in August, October and November 1998; and

. an aggregate of 5,464,486 shares of Series C preferred stock at $5.49 per share in February and March 1999.

Each share of preferred stock will be converted into common stock upon completion of this offering.

We paid $61,000 in March 1998 to Safeware Corporation for employee salary and patent prosecution expenses incurred on our behalf. Mr. Ananda is the majority shareholder in Safeware Corporation. We also reimbursed Mr. Ananda for approximately $20,000 for expenses incurred on our behalf.

We paid Mr. Payne $112,800 for consulting services he rendered to us between May 1998 and October 1998.

In February 1999, Loren Smith, a director, entered into a three-year consulting agreement with us to provide marketing and strategic planning services. In exchange for his consulting services, Mr. Smith will receive consulting fees of $120,000 per annum and an option to purchase 90,000 shares of common stock at $0.50 per share. The term of this agreement extends from February 1999 to February 2002.

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PRINCIPAL STOCKHOLDERS

The following table sets forth information with respect to the beneficial ownership of the common stock as of March 31, 1999, after giving effect to the conversion of convertible preferred stock, and as adjusted to reflect the sale of the shares of common stock offered in this offering, by (1) each stockholder whom we know to beneficially own 5% or more of the outstanding shares of common stock, (2) each of our directors and Named Executive Officers, and (3) all of our directors and executive officers as a group. Unless otherwise indicated, the address of each beneficial owner listed below is c/o Stamps.com Inc., 2900 31st Street, Suite 150, Santa Monica, California 90405.

Beneficial ownership is determined in accordance with the rules of the Securities and Exchange Commission and generally includes voting or investment power with respect to securities. Except as indicated by the footnotes below, we believe, based on information furnished to us, that the persons and entities named in the table below have sole voting and investment power with respect to all shares of common stock shown as beneficially owned by them. Percentage of beneficial ownership is based on 19,847,636 shares of common stock outstanding as of March 31, 1999 on a proforma basis and shares of common stock outstanding after the completion of this offering. In computing the number of shares of common stock subject to options held by that person that are exercisable within 60 days of March 31, 1999, these shares are deemed outstanding for the purpose of determining the percentage ownership of the optionee. These shares, however, are not deemed outstanding for the purpose of computing the percentage ownership of any other stockholder.

                                                     Percentage of Shares
                                                      Beneficially Owned
                                                     ------------------------
                                   Number of Shares    Before        After
    Name of Beneficial Owner      Beneficially Owned  offering      offering
    ------------------------      ------------------ ----------    ----------
Named Executive Officers and
  Directors:
  Jeffrey J. Brown(1)............      3,614,299             18.2%           %
  Thomas N. Clancy(2)............      3,614,299             18.2%           %
  G. Bradford Jones(3)...........      3,614,299             18.2%           %
  Mohan P. Ananda(4).............      1,448,397              7.3%           %
  John M. Payne..................      1,000,000              5.0%           %
  Thomas H. Bruggere(5)..........        325,650              1.6%           %
  John W. LaValle (6)............        263,868              1.3%           %
  Douglas J. Walner(7)...........        244,238              1.2%           %
  Loren E. Smith(8)..............        162,000                *            *
  David C. Bohnett(9)............         90,215                *            *
  Marvin Runyon(10)..............         76,554                *            *
Other 5% Stockholders:
  Brentwood Venture Capital
    (3)..........................      3,614,299             18.2%           %
     11150 Santa Monica Blvd,
       Suite 1200
     Los Angeles, CA 90025
  Enterprise Partners IV, L.P.
    (2)..........................      3,614,299             18.2%           %
     5000 Birch Street, Suite
       6200
     Newport Beach, CA 92660
  SBIC Partners, L.P. ...........      3,614,299             18.2%           %
     840 Newport Center Drive,
       Suite 480
     Newport Beach, CA 92660
  Vulcan Ventures Inc............      1,821,494              9.2%           %
     110-110th Ave., N.E., Suite
       550
     Bellevue, WA 98004
  Chase Venture Capital
    Partners, L.P................      1,457,195              7.3%           %
     380 Madison Ave., 12th Floor
     New York, NY 10017
All directors and executive
  officers as a group
  (15 people) (11)...............     14,861,391             71.5%           %

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* Represents beneficial ownership of less than 1% of the outstanding shares of common stock.
(1) Consists of 3,614,299 shares held by SBIC Partners, L.P. Jeffrey Brown is a director and executive officer of Forrest Binkley & Brown Venture Co., the general partner of Forrest Binkley & Brown L.P., the Managing Partner of SBIC Partners. Mr. Brown disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
(2) Includes 3,325,155 shares and 289,144 held by Enterprise Partners IV, L.P. and Enterprise Partners IV Associates, L.P., respectively. Thomas N. Clancy is a Venture Partner at Enterprise Partners Venture Capital. Mr. Clancy disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
(3) Includes 3,469,727 shares and 144,572 shares held by Brentwood Associates VIII, L.P. and Brentwood Affiliates Fund, L.P., respectively. G. Bradford Jones is a General Partner at Brentwood Venture Capital. Mr. Jones disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
(4) Includes 160,000 shares held in trust for the benefit of Mr. Ananda's family.
(5) Includes 50,000 shares held in trust for the benefit of his children as to which Mr. Bruggere disclaims beneficial ownership.
(6) Includes 263,868 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days from March 31, 1999.
(7) Includes 244,238 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days from March 31, 1999.
(8) Includes 162,000 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days from March 31, 1999.
(9) Includes 72,000 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days from March 31, 1999.
(10) Includes 72,000 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days from March 31, 1999.
(11) Includes 939,106 shares subject to options, all of which are presently exercisable or will become exercisable within 60 days of March 31, 1999.

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DESCRIPTION OF CAPITAL STOCK

The following description of our securities and certain provisions of our certificate of incorporation and bylaws are summaries. Statements contained in this prospectus relating to such provisions are not necessarily complete, copies of which have been filed with the Commission as exhibits to our registration statement, of which this prospectus forms a part. The description of common stock and preferred stock reflect changes to our capital structure that will occur upon the closing of this offering in accordance with the terms of the certificates that will be adopted by us immediately prior to the closing of this offering.

Upon the closing of this offering, our authorized capital stock will consist of shares of common stock, par value $0.001, and 5,000,000 shares of preferred stock, par value $0.001.

Common Stock

As of March 31, 1999, there were 19,847,636 shares of common stock outstanding and held of record by 36 stockholders (assuming conversion of all shares of preferred stock into common stock). Based on the number of shares outstanding as of that date and giving effect to the issuance of the shares of common stock offered by us hereby, there will be shares of common stock outstanding (assuming no exercise of the underwriters' over- allotment option) upon the closing of the offering.

Holders of the common stock are entitled to one vote for each share held on all matters submitted to a vote of the stockholders. Holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Board of Directors out of legally available funds, subject to any preferential dividend rights of any outstanding preferred stock. Upon our liquidation, dissolution or winding up, the holders of common stock are entitled to receive ratably our net assets available after the payment of all debts and other liabilities and subject to the prior rights of any outstanding preferred stock. Holders of common stock have no preemptive, subscription, redemption or conversion rights. The outstanding shares of common stock are, and the shares offered by us in this offering will be, upon receipt of payment for such shares, fully paid and nonassessable. The rights, preferences and privileges of holders of common stock are subject to, and may be adversely affected by, the rights of holders of shares of any series of preferred stock which we may designate and issue in the future without further stockholder approval. Upon the closing of the offering, there will be no shares of preferred stock outstanding.

Preferred Stock

Upon the closing of this offering, all outstanding shares of our Series A, Series B and Series C preferred stock will convert into shares of common stock. Thereafter, the Board of Directors will be authorized without further stockholder approval, to issue from time to time up to an aggregate of 5,000,000 shares of preferred stock in one or more series and to fix or alter the designations, preferences, rights and any qualifications, limitations or restrictions of the shares of each such series, including the dividend rights, dividend rates, conversion rights, voting rights, term of redemption (including sinking fund provisions), redemption price or prices, liquidation preferences and the number of shares constituting any series or designations of such series without further vote or action by the stockholders. The issuance of preferred stock may have the effect of delaying, deferring or preventing a change in control of our management without further action by the stockholders and may adversely affect the voting and other rights of the holders of common stock. The issuance of preferred stock with voting and conversion rights may adversely affect the voting power of the holders of common stock, including the loss of voting control to others. We have no present plans to issue any shares of preferred stock.

Warrant

On May 1, 1998, we issued a warrant which is currently exercisable for 4,700 shares of common stock at $0.40 per share. The warrant may be exercised at any time on or before May 1, 2005.

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Anti-Takeover Effects of Provisions of Delaware Law and our Certificate of Incorporation and Bylaws

We are subject to the provisions of Section 203 of the Delaware General Corporation Law, as amended from time to time. Subject to certain exceptions,
Section 203 prohibits a publicly-held Delaware corporation from engaging in a "business combination" with an "interested stockholder" for a period of three years from the date of the transaction in which the person became an interested stockholder, unless the interested stockholder attained such status with the approval of the board of directors or unless the business combination is approved in a prescribed manner. A "business combination" includes mergers, asset sales and other transactions resulting in a financial benefit to the interested stockholder. Subject to certain exceptions, an "interested stockholder" is a person who, together with affiliates and associates, owns, or within three years did own, fifteen percent (15%) or more of the corporation's voting stock. This statute could prohibit or delay the accomplishment of mergers or other takeover or change in control in attempts with respect to us and, accordingly, may discourage attempts to acquire us.

In addition, certain provisions of the certificate of incorporation and bylaws, which provisions are summarized in the following paragraphs, may be deemed to have an anti-takeover effect and may delay, defer or prevent a tender offer or takeover attempt that a stockholder might consider in his best interest, including those attempts that might result in a premium over the market price for the shares held by our stockholders.

Stockholder Action; Special Meeting of Stockholders. The certificate provides that stockholders may not take action by written consent, but only at duly called annual or special meetings of stockholders. The certificate further provides that special meetings of our stockholders may be called only by the Chairman of the Board of Directors or a majority of the Board of Directors.

Advance Notice Requirements for Stockholder Proposals and Director Nominations. The bylaws provide that stockholders seeking to bring business before an annual meeting of stockholders, or to nominate candidates for election as directors at an annual meeting of stockholders, must provide timely notice thereof in writing. To be timely, a stockholder's notice must be delivered to or mailed and received at our principal executive offices not less than days nor more than days prior to the first anniversary of the date of our notice of annual meeting provided with respect to the previous year's annual meeting of stockholders; provided, that if no annual meeting of stockholders was held in the previous year or the date of the annual meeting of stockholders has been changed to be more than 30 calendar days earlier than or 60 calendar days after such anniversary, notice by the stockholder, to be timely, must be so received not more than 90 days before nor later than the later of (a) 60 days prior to the annual meeting of stockholders or (b) the close of business on the 10th day following the date on which notice of the date of the meeting is given to stockholders or made public, whichever first occurs. The bylaws also specify certain requirements as to the form and content of a stockholder's notice. These provisions may preclude stockholders from bringing matters before an annual meeting of stockholders or from making nominations for directors at an annual meeting of stockholders.

Authorized But Unissued Shares. The authorized but unissued shares of common stock and preferred stock are available for future issuance without stockholder approval. These additional shares may be utilized for a variety of corporate purposes, including future public offerings to raise additional capital, corporate acquisitions and employee benefit plans. The existence of authorized but unissued shares of common stock and preferred stock could render more difficult or discourage an attempt to obtain control of us by means of a proxy contest, tender offer, merger or otherwise.

The Delaware General Corporation Law provides generally that the affirmative vote of a majority of the shares entitled to vote on any matter is required to amend a corporation's certificate of incorporation or bylaws, unless a corporation's certificate of incorporation or bylaws, as the case may be, requires a greater percentage.

Registration Rights

After this offering, holders of the 16,695,383 shares of common stock issuable upon conversion of the outstanding preferred stock upon the closing of this offering will be entitled to registration rights with respect

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to their shares. Of such shares, 1,448,397 shares of common stock are only entitled to "piggy-back" registration rights. The holders of securities with registration rights can require us to register all or part of their shares at any time following six months after this offering, subject to certain conditions. In addition, subject to certain limitations, these holders may also require us to include their shares in future registration statements that we file and may require us to register their shares on Form S-3. Upon registration, such shares are freely tradable in the public market without restriction.

Transfer Agent and Registrar

The Transfer Agent and Registrar for our common stock will be U.S. Stock Transfer Corporation.

Listing

Application has been made for listing the common stock on the Nasdaq National Market under the trading symbol "STMP."

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SHARES ELIGIBLE FOR FUTURE SALE

Upon completion of the offering, we will have shares of common stock outstanding ( shares if the underwriters' over-allotment option is exercised in full), assuming no exercise of options after , 1999. Of this amount, the shares offered by this prospectus will be available for immediate sale in the public market as of the date of this prospectus. An additional shares are not subject to an 180-day lock- up and will be available for sale in the public market 90 days following the date of this prospectus pursuant to Rule 701. Approximately additional shares will be available for sale in the public market following the expiration of 180-day lock-up agreements with the representatives of our underwriters, subject in some cases to compliance with the volume and other limitations of Rule 144.

  Days after the   Approximate Shares
   Date of this       Eligible for
    Prospectus        Future Sale                     Comment
  --------------   ------------------ ---------------------------------------
Upon Effectiveness                    Freely tradable shares sold in offering
                                      and shares salable under Rule 144(k)
                                      that are not subject to 180-day lock-up
90 days                               Shares salable under Rules 144 or 701
                                      that are not subject to 180-day lock-up
180 days                              Lock-up released; shares salable under
                                      Rules 144 or 701
Over 180 days                         Restricted securities held for one year
                                      or less

In general, under Rule 144 as currently in effect, a person (or persons whose shares are aggregated) who has beneficially owned shares for at least one year is entitled to sell within any three-month period commencing 90 days after the date of this prospectus a number of shares that does not exceed the greater of (a) 1% of the then outstanding shares of common stock (approximately shares immediately after the offering) or (b) the average weekly trading volume during the four calendar weeks preceding such sale, subject to the filing of a Form 144 with respect to such sale. A person (or persons whose shares are aggregated) who is not deemed to have been an affiliate of Stamps.com at any time during the 90 days immediately preceding the sale and who has beneficially owned his or her shares for at least two years is entitled to sell such shares pursuant to Rule 144(k) without regard to the limitations described above. Persons deemed to be affiliates must always sell pursuant to Rule 144, even after the applicable holding periods have been satisfied.

We are unable to estimate the number of shares that will be sold under Rule 144, since this will depend on the market price for our common stock, the personal circumstances of the sellers and other factors. Prior to the offering, there has been no public market for the common stock, and there can be no assurance that a significant public market for the common stock will develop or be sustained after the offering. Any future sale of substantial amounts of the common stock in the open market may adversely affect the market price of the common stock offered hereby.

Our directors, executive officers, stockholders with registration rights and certain other stockholder and optionholders have agreed pursuant to the underwriting agreement and other agreements that they will not sell any common stock without the prior written consent of BancBoston Robertson Stephens Inc. for a period of 180 days from the date of this prospectus. We have also agreed not to issue any shares during the lock-up period without the consent of BancBoston Robertson Stephens Inc., except that we may, without such consent, grant options and sell shares pursuant to our stock incentive and purchase plans.

Any of our employees or consultants who purchased his or her shares pursuant to a written compensatory plan or contract is entitled to rely on the resale provisions of Rule 701, which permits nonaffiliates to sell their Rule 701 shares without having to comply with the public information, holding period, volume limitation or notice provisions of Rule 144 and permits affiliates to sell their Rule 701 shares without having to comply with the Rule 144 holding period restrictions, in each case commencing 90 days after the date of this prospectus. As of , the holders of options to purchase approximately shares of common stock will be eligible to sell their shares upon the expiration of the lock-up period, subject in certain cases to vesting of such options.

55

We intend to file a registration statement on Form S-8 under the Securities Act within days after the completion of the offering to register shares of common stock subject to outstanding stock options reserved for issuance under our 1999 Stock Incentive Plan, thus permitting the resale of such shares by nonaffiliates in the public market without restriction under the Securities Act.

In addition, certain shareholders have registration rights with respect to 16,695,383 shares of common stock and common stock equivalents. Registration of the registrable securities under the Securities Act would result in such shares becoming freely tradable without restriction under the Securities Act.

56

UNDERWRITING

The underwriters named below, acting through their representatives, BancBoston Robertson Stephens Inc., Thomas Weisel Partners LLC and Volpe Brown Whelan & Company, LLC have severally agreed with us, subject to the terms and conditions of the underwriting agreement, to purchase from us the number of shares of common stock set forth opposite their names below. The underwriters are committed to purchase and pay for all such shares if any are purchased.

                                                                   Number of
                           Underwriters                              Shares
                           ------------                            ----------
BancBoston Robertson Stephens Inc. ..............................
Thomas Weisel Partners LLC.......................................
Volpe Brown Whelan & Company, LLC................................
                                                                   ----------
  Total..........................................................

We have been advised that the underwriters propose to offer the shares of common stock to the public at the public offering price set forth on the cover page of this prospectus and to certain dealers at such price less a concession of not in excess of $ per share, of which $ may be reallowed to other dealers. After the initial public offering, the public offering price, concession and reallowance to dealers may be reduced by the representatives. No such reduction shall change the amount of proceeds to be received by us as set forth on the cover page of this prospectus.

Over-Allotment Option. We have granted to the underwriters an option, exercisable during the 30-day period after the date of this prospectus, to purchase up to additional shares of common stock at the same price per share as we will receive for the shares that the underwriters have agreed to purchase. To the extent that the underwriters exercise such option, each of the underwriters will have a firm commitment to purchase approximately the same percentage of such additional shares that the number of shares of common stock to be purchased by it shown in the above table represents as a percentage of the shares offered hereby. If purchased, such additional shares will be sold by the underwriters on the same terms as those on which the shares are being sold. We will be obligated, pursuant to the option, to sell shares to the extent the option is exercised. The underwriters may exercise such option only to cover over- allotments made in connection with the sale of the shares of common stock offered hereby.

The following table shows the per share and total underwriting discounts and commissions to be paid by us to the underwriters. This information is presented assuming either no exercise or full exercise by the underwriters of their over-allotment option.

                                                          Per  Without  With
                                                         Share Option  Option
                                                         ----- ------- ------
Public offering price...................................  $      $      $
Underwriting discounts and commissions..................  $      $      $
Proceeds, before expenses, to us........................  $      $      $

The expenses of the offering are estimated at $ million and are payable entirely by us. BancBoston Robertson Stephens Inc. expects to deliver the shares of common stock to purchasers on , 1999.

Indemnity. The underwriting agreement contains covenants of indemnity among the underwriters and us against certain civil liabilities, including liabilities under the Securities Act and liabilities arising from breaches of representation and warranties contained in the underwriting agreement.

Future Sales. Each of our executive officers, directors and other significant stockholders of record has agreed with the representatives, for a period of 180 days after the date of this prospectus (the "Lock-Up Period"), not to offer to sell, contract to sell or otherwise sell, dispose of, loan, pledge or grant any rights with respect to any shares of common stock, any options or warrants to purchase any shares of common stock, or

57

any securities convertible into or exchangeable for shares of common stock owned as of the date of this prospectus or thereafter acquired directly by such holders or with respect to which they have or hereafter acquire the power of disposition, without the prior written consent of BancBoston Robertson Stephens Inc. However, BancBoston Robertson Stephens Inc. may, in its sole discretion and at any time without notice, release all or any portion of the securities subject to lock-up agreements. There are no agreements between the representatives and any of our stockholders providing consent by the representatives to the sale of shares prior to the expiration of the Lock-Up Period. In addition, we have agreed that, during the Lock-Up Period, we will not, subject to certain exceptions, without the prior written consent of BancBoston Robertson Stephens Inc., (a) consent to the disposition of any shares held by stockholders prior to the expiration of the Lock-Up Period or
(b) issue, sell, contract to sell or otherwise dispose of, any shares of common stock, any options or warrants to purchase any shares of common stock, or any securities convertible into, exercisable for or exchangeable for shares of common stock, other than our sale of shares in the offering, our issuance of common stock upon the exercise of currently outstanding options and warrants, and our issuance of incentive awards under our stock incentive plans. See "Shares Eligible for Future Sale."

Directed Shares. At our request, the underwriters have reserved up to shares of common stock for sale, at the initial public offering price, to our employees, business associates and other friends through a directed share program. The number of shares of common stock available for sale to the general public in the offering will be reduced to the extent participants in the directed share program purchase the reserved shares.

The underwriters do not intend to confirm sales to any accounts over which they exercise discretionary authority.

No Prior Public Market. Prior to this offering, there has been no public market for the common stock. Consequently, the initial public offering price for the common stock offered hereby has been determined through negotiations between us and the representatives. Among the factors considered in such negotiations were prevailing market conditions, our financial information, market valuations of other companies that we and the representatives believe to be comparable to us, estimates of our business potential, the present state of our development and other factors deemed relevant.

Bayview Investors, Ltd., an investment partnership affiliated with BancBoston Robertson Stephens Inc., purchased 60,717 shares of Series C Preferred Stock from us on February 17, 1999 at a price of $5.49 per share and on the same terms and conditions as all other purchasers in our Series C Preferred Stock financing. BancBoston Robertson Stephens Inc. acted as placement agent for our Series C Preferred Stock financing and received for its services a fee of approximately $1.4 million from us.

New Underwriter. Thomas Weisel Partners LLC, one of the representatives of the underwriters, was organized and registered as a broker-dealer in December 1998. Since December 1998, Thomas Weisel Partners has been named as a lead or co-manager on filed public offerings of equity securities, of which have been completed, and has acted as a syndicate member in an additional public offerings of equity securities. Thomas Weisel Partners does not have any material relationship with us or any of our officers, directors or other controlling persons, except with respect to its contractual relationship with us pursuant to the underwriting agreement entered into in connection with this offering.

Stabilization. The representatives have advised us that, pursuant to Regulation M under the Securities Exchange Act, certain persons participating in the offering may engage in transactions, including stabilizing bids, syndicate covering transactions or the imposition of penalty bids, that may have the effect of stabilizing or maintaining the market price of the common stock at a level above that which might otherwise prevail in the open market. A "stabilizing bid" is a bid for or the purchase of the common stock on behalf of the underwriters for the purpose of fixing or maintaining the price of the common stock. A "syndicate covering transaction" is the bid for or purchase of the common stock on behalf of the underwriters to reduce a short position incurred by the underwriters in connection with the offering. A "penalty bid" is an arrangement

58

permitting the representatives to reclaim the selling concession otherwise accruing to an underwriter or syndicate member in connection with the offering if the common stock originally sold by such underwriter or syndicate member is purchased by the representatives in a syndicate covering transaction and has therefore not been effectively placed by such underwriter or syndicate member. The representatives have advised us that such transactions may be effected on the Nasdaq National Market or otherwise and, if commenced, may be discontinued at any time.

LEGAL MATTERS

The validity of the common stock offered hereby will be passed upon for us by Brobeck, Phleger & Harrison LLP, Irvine, California. As of March 31, 1999, certain entities and individuals affiliated with Brobeck, Phleger & Harrison LLP beneficially owned an aggregate of 51,609 shares of our Series C preferred stock that will convert to common stock in the offering. Certain legal matters relating to the sale of common stock in this offering will be passed upon for the underwriters by Wilson Sonsini Goodrich & Rosati, Palo Alto, California.

EXPERTS

The financial statements included in this prospectus and elsewhere in the registration statement have been audited by Arthur Andersen LLP, independent public accountants, as indicated in their report with respect thereto, and are included herein in reliance upon the authority of said firm as experts in accounting and auditing in giving said reports.

ADDITIONAL INFORMATION

We have filed with the Securities and Exchange Commission (the "Commission") a registration statement on Form S-1 (including the exhibits and schedules thereto) under the Securities Act with respect to the shares to be sold in the offering. This prospectus does not contain all the information set forth in the registration statement. For further information with respect to us and the shares to be sold in the offering, reference is made to the registration statement. Statements contained in this prospectus as to the contents of any contract, agreement or other document referred to are not necessarily complete, and in each instance reference is made to the copy of such contract, agreement or other document filed as an exhibit to the registration statement, each such statement being qualified in all respects by such reference. In addition, we intend to file annual, quarterly and current reports, proxy statements and other information with the Commission.

You may read and copy all or any portion of the registration statement or any reports, statements or other information that we file at the Commission's public reference room at 450 Fifth Street, N.W., Washington, D.C. 20549. You can request copies of these documents, upon payment of a duplicating fee, by writing to the Commission. Please call the Commission at 1-800-SEC-0330 for further information on the operation of the public reference rooms. Our Commission filings, including the registration statement, are also available to you on the Commission's Web site (http://www.sec.gov).

59

STAMPS.COM INC.
(A DEVELOPMENT STAGE COMPANY)

INDEX TO FINANCIAL STATEMENTS

                                                                            Page
                                                                            ----
Report of Independent Public Accountants..................................  F-2

Balance Sheets at December 31, 1998 and March 31, 1999 (unaudited)........  F-3

Statements of Operations for the period from January 9, 1998 (date of
  inception) to December 31, 1998, the period from January 9, 1998 (date
  of inception) to March 31, 1998 (unaudited), the three months ended
  March 31, 1999 (unaudited) and the period from January 9, 1998 (date of
  inception) to March 31, 1999 (unaudited)................................  F-4

Statements of Stockholders' Equity for the period from January 9, 1998
  (date of inception) through December 31, 1998 and the three months ended
  March 31, 1999 (unaudited)..............................................  F-5

Statements of Cash Flows for the period from January 9, 1998 (date of
  inception) to December 31, 1998, the period from January 9, 1998 (date
  of inception) to March 31, 1998 (unaudited), the three months ended
  March 31, 1999 (unaudited) and the period from January 9, 1998 (date of
  inception) to March 31, 1999 (unaudited)................................  F-6

Notes to Financial Statements.............................................  F-7

F-1

REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Stockholders of Stamps.com Inc.:

We have audited the accompanying balance sheet of Stamps.com Inc. (a Delaware corporation in the development stage) as of December 31, 1998, and the related statements of operations, stockholders' equity and cash flows for the period from January 9, 1998 (date of inception) through December 31, 1998. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the financial statements based on our audit.

We conducted our audit in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Stamps.com Inc. as of December 31, 1998, and the results of its operations and its cash flows for the period from January 9, 1998 (date of inception) through December 31, 1998 in conformity with generally accepted accounting principles.

ARTHUR ANDERSEN LLP

Los Angeles, California
January 13, 1999

F-2

STAMPS.COM INC.
(A DEVELOPMENT STAGE COMPANY)

BALANCE SHEETS

                                                           March 31, 1999
                                                       ------------------------
                                         December 31,                Pro Forma
                                             1998      Historical    (Note 1)
                                         ------------  -----------  -----------
                                                       (unaudited)  (unaudited)
ASSETS
Current assets:
  Cash and cash equivalents............  $ 3,470,207   $28,523,897  $28,523,897
  Prepaid expenses.....................       48,118       170,809      170,809
                                         -----------   -----------  -----------
Total current assets...................    3,518,325    28,694,706   28,694,706
Property and equipment, net............      670,301       920,255      920,255
Patents, trademarks and other
  intangibles, net.....................       78,122        75,854       75,854
Other..................................      159,071       181,437      181,437
                                         -----------   -----------  -----------
Total assets...........................  $ 4,425,819   $29,872,252  $29,872,252
                                         ===========   ===========  ===========

LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Line of credit.......................  $ 1,000,000   $ 1,000,000  $ 1,000,000
  Accounts payable.....................      392,372       559,158      559,158
  Accrued expenses.....................      192,528       537,106      537,106
  Accrued payroll and related..........      140,942       300,751      300,751
  Accrued professional.................      200,000            --           --
  Current portion of capital lease
    obligations........................      207,683       207,683      207,683
                                         -----------   -----------  -----------
Total current liabilities..............    2,133,525     2,604,698    2,604,698
Capital lease obligations, less current
  portion..............................      265,070       216,916      216,916
Commitments
Stockholders' equity:
  Preferred stock, $.001 par value
    (Series A, B & C):
   Authorized shares 10,000,000 at
     December 31, 1998 and 15,500,000
     at March 31, 1999
   Issued and outstanding shares
     9,782,500 at December 31, 1998 and
     15,246,986 at March 31, 1999 (pro
     forma: none)
   Liquidation preference of $6,020,000
     at December 31, 1998 and
     $36,020,028 at March 31, 1999 (pro
     forma: none)......................    5,978,344    34,277,938           --
  Common stock, $.001 par value:
   Authorized shares 20,000,000 at
     December 31, 1998 and 40,000,000
     at March 31, 1999
   Issued and outstanding shares
     4,600,650 at December 31, 1998 and
     March 31, 1999 (pro forma:
     19,847,636).......................        4,601         4,601       19,848
  Additional paid-in capital...........      190,159       190,159   34,452,850
  Notes receivable from stock sales....     (117,000)     (117,000)    (117,000)
  Deficit accumulated during the
    development stage..................   (4,028,880)   (7,305,060)  (7,305,060)
                                         -----------   -----------  -----------
Total stockholders' equity.............    2,027,224    27,050,638   27,050,638
                                         -----------   -----------  -----------
Total liabilities and stockholders'
  equity...............................  $ 4,425,819   $29,872,252  $29,872,252
                                         ===========   ===========  ===========

See accompanying notes.

F-3

STAMPS.COM INC.
(A DEVELOPMENT STAGE COMPANY)

STATEMENTS OF OPERATIONS

                             Period from
                           January 9, 1998       Period from                        Period from
                         (date of inception)   January 9, 1998    Three Months    January 9, 1998
                                 to          (date of inception)     Ended      (date of inception)
                          December 31, 1998   to March 31, 1999  March 31, 1999  to March 31, 1999
                         ------------------- ------------------- -------------- -------------------
                                                 (unaudited)      (unaudited)       (unaudited)
Revenues................     $       --           $     --        $       --        $       --
Costs and expenses:
  Research and
    development.........       1,531,811             83,381         1,159,772         2,691,583
  General and
    administrative......       2,481,279            275,713         2,118,426         4,599,705
                             -----------          ---------       -----------       -----------
     Total costs and
       expense..........       4,013,090            359,094         3,278,198         7,291,288
                             -----------          ---------       -----------       -----------
Loss from operations....      (4,013,090)          (359,094)       (3,278,198)       (7,291,288)
Other income (expense):
  Interest expense......         (27,624)               --            (33,001)          (60,625)
  Interest income.......          11,834                --             35,019            46,853
                             -----------          ---------       -----------       -----------
Net loss................     $(4,028,880)         $(359,094)      $(3,276,180)      $(7,305,060)
                             ===========          =========       ===========       ===========
Historical basic and
  diluted net loss per
  share.................     $     (1.22)         $   (0.13)      $     (0.71)      $     (2.05)
Pro forma basic and
  diluted net loss per
  share.................     $     (0.52)         $   (0.08)      $     (0.20)      $     (0.77)

See accompanying notes.

F-4

STAMPS.COM INC.
(A DEVELOPMENT STAGE COMPANY)

STATEMENTS OF STOCKHOLDERS' EQUITY

                                                                                          Deficit
                            Preferred Stock                                    Notes    Accumulated
                           (Series A, B & C)      Common Stock   Additional Receivable  During the
                         ---------------------- ----------------  Paid-in      from     Development
                           Shares     Amount     Shares   Amount  Capital   Stock Sales    Stage        Total
                         ---------- ----------- --------- ------ ---------- ----------- -----------  -----------
Balance at January 9,
 1998 (inception).......         -- $        --        -- $   --  $     --   $      --  $        --  $        --
 Issuance of Common
  Stock.................         --          -- 3,275,000  3,275    63,025     (18,000)          --       48,300
 Issuance of Series A
  Preferred Stock, net
  of offering costs, at
  $0.40 a share.........  3,762,500   1,463,344        --     --        --          --           --    1,463,344
 Issuance of Series B
  Preferred Stock at
  $0.75 a share.........  6,020,000   4,515,000        --     --        --          --           --    4,515,000
 Issuance of restricted
  Common Stock..........         --          -- 1,325,650  1,326   127,134     (99,000)          --       29,460
 Net loss...............         --          --        --     --        --          --   (4,028,880)  (4,028,880)
                         ---------- ----------- --------- ------  --------   ---------  -----------  -----------
Balance at December 31,
 1998...................  9,782,500   5,978,344 4,600,650  4,601   190,159    (117,000)  (4,028,880)   2,027,224
 Issuance of Series C
  Preferred Stock, net
  of offering costs, at
  $5.49 a share
  (unaudited)...........  5,464,486  28,299,594        --     --        --          --           --   28,299,594
Net loss (unaudited)....         --          --        --     --        --          --   (3,276,180)  (3,276,180)
                         ---------- ----------- --------- ------  --------   ---------  -----------  -----------
Balance at March 31,
 1999 (unaudited)....... 15,246,986 $34,277,938 4,600,650 $4,601  $190,159   $(117,000) $(7,305,060) $27,050,638
                         ========== =========== ========= ======  ========   =========  ===========  ===========

See accompanying notes.

F-5

STAMPS.COM INC.
(A DEVELOPMENT STAGE COMPANY)

STATEMENTS OF CASH FLOWS

                           Period from   Period from                Period from
                           January 9,    January 9,      Three      January 9,
                          1998 (date of 1998 (date of   Months     1998 (date of
                          inception) to inception) to    Ended     inception) to
                          December 31,    March 31,    March 31,     March 31,
                          ------------- ------------- -----------  -------------
                              1998          1998         1999          1999
                          ------------- ------------- -----------  -------------
                                         (unaudited)  (unaudited)   (unaudited)
Operating activities:
  Net loss..............   $(4,028,880)  $ (359,094)  $(3,276,180)  $(7,305,060)
  Adjustments to
    reconcile net loss
    to net cash used in
    operating
    activities:
     Depreciation and
       amortization.....        81,540        4,126        63,480       145,020
     Changes in
       operating assets
       and liabilities:
       Prepaid
         expenses.......       (48,118)     (10,023)     (122,691)     (170,809)
       Accounts
         payable........       392,372       20,928       166,786       559,158
       Accrued
         expenses.......       533,470          --        304,387       837,857
                           -----------   ----------   -----------   -----------
Net cash used in
  operations
  activities............    (3,069,616)    (344,063)   (2,864,218)   (5,933,834)
Investing activities:
  Capital
    expenditures........      (195,297)    (111,513)     (311,166)     (506,463)
  Other.................      (209,071)     (24,512)      (22,366)     (231,437)
                           -----------   ----------   -----------   -----------
Net cash used in
  investing activities..      (404,368)    (136,025)     (333,532)     (737,900)
Financing activities:
  Net proceeds from
    line of credit......     1,000,000          --            --      1,000,000
  Repayment of capital
    lease obligations...       (81,945)         --        (48,154)     (130,099)
  Issuance of Series A
    Preferred Stock,
    net.................     1,463,344    1,463,344           --      1,463,344
  Issuance of Series B
    Preferred Stock.....     4,515,000          --            --      4,515,000
  Issuance of Series C
    Preferred Stock,
    net.................           --           --     28,299,594    28,299,594
  Issuance of Common
    Stock...............        47,792       18,332           --         47,792
                           -----------   ----------   -----------   -----------
Net cash provided by
  financing activities..     6,944,191    1,481,676    28,251,440    35,195,631
                           -----------   ----------   -----------   -----------
Net increase in cash and
  cash equivalents......     3,470,207    1,001,588    25,053,690    28,523,897
Cash and cash
  equivalents at
  beginning of period...           --           --      3,470,207           --
                           -----------   ----------   -----------   -----------
Cash and cash
  equivalents at end of
  period................   $ 3,470,207   $1,001,588   $28,523,897    28,523,897
                           ===========   ==========   ===========   ===========
Supplemental cash flow
  disclosure:...........
Cash paid for:
  Interest..............   $    27,624   $      --    $    33,001   $    60,625
  Income taxes..........   $       800   $      800   $       800   $     1,600
Noncash investing and
  financial activity:
  Issuance of common
    stock in exchange
    for a patent and a
    trademark name......   $    29,968   $   28,968   $       --    $    29,968
  Equipment acquired
    under capital
    lease...............   $   554,698   $      --    $       --    $   554,698
  Issuance of notes
    receivable from
    stock sales.........   $   117,000   $  117,000   $       --    $   117,000

See accompanying notes.

F-6

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS

1. Summary of Significant Accounting Policies

Description of Business and Basis of Presentation

Stamps.com Inc. (Stamps.com Inc. or the Company), formerly known as StampMaster, Inc., was incorporated in Delaware on January 9, 1998, and is a development stage company. Its primary activities since inception have been to develop an internet-based postal service delivery system for end-users and raise capital to finance operations.

The Company is subject to the normal risks associated with a development stage enterprise in the technology industry. These risks include, among others, the risks associated with product development, approval of product by the United States Postal Service, acceptance of the product by end users and the ability to raise additional capital to sustain operations.

The Company's Internet postage service for purchasing postage over the Internet has not yet been approved by the US Postal Service. The Company is currently in the pre-approval testing stage of the US Postal Service's Information Based Indicia Program. There can be no assurance that the Company's service will successfully emerge from this testing phase or that the US Postal Service will approve the service for commercial use.

The statement of operations for the period from inception through December 31, 1998 includes approximately $35,000 of expenses incurred prior to incorporation. In September 1996, the founders began to investigate the feasibility of entering into the United States Postal Service's Information Based Indicia Program and initiated the certification process.

Unaudited Interim Financial Information and Pro Forma Balance Sheet

The interim financial statements of the Company for the period from January 9, 1998 (date of inception) to March 31, 1998 and the three months ended March 31, 1999, included herein have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations relating to interim financial statements. In the opinion of management, the accompanying unaudited interim financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the financial position of the Company at March 31, 1999, the results of operations and its cash flows for the period from January 9, 1998 (date of inception) to March 31, 1998 and the three months ended March 31, 1999.

The unaudited pro forma balance sheet is presented to show the effects on the unaudited March 31, 1999 balance sheet of the conversion of all outstanding shares of preferred stock into 15,246,986 shares of common stock which will occur upon the completion of the anticipated initial public offering (see Note 6 and 7) as if the conversions took place at inception, or the date of original issuance, if later.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and the accompanying notes. Actual results could differ from those estimates and such differences may be material to the financial statements.

Cash Equivalents

Cash equivalents include demand deposits and short-term investments with a maturity of three months or less when purchased.

Concentration of Risk

The financial instrument that potentially exposes the Company to concentrations of credit risks consists primarily of cash equivalents. The Company places its cash equivalents with high quality financial institutions. At times, such balances may be in excess of the FDIC insurance limit.

F-7

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

Computation of Historical Net Loss per Share and Pro Forma Net Loss Per Share

In accordance with Statement of Financial Accounting Standards (SFAS) No. 128, "Computation of Earnings Per Share," basic earnings per share is computed by dividing the net earnings available to common stockholders for the period by the weighted average number of common shares outstanding during the period. Diluted earnings per share is computed by dividing the net earnings for the period by the weighted average number of common and common equivalent shares outstanding during the period.

Common equivalent shares, consisting of unvested restricted Common Stock and incremental common shares issuable upon the exercise of stock options and warrants and upon conversion of convertible preferred stock, are excluded from the diluted earnings per share calculation if their effect is anti-dilutive.

A summary of the shares used to compute earnings per share is as follows:

                             Period from         Period from                        Period from
                           January 9, 1998     January 9, 1998                    January 9, 1998
                         (date of inception) (date of inception)  Three Months  (date of inception)
                                 to                  to              Ended              to
                          December 31, 1998    March 31, 1998    March 31, 1999   March 31, 1999
                         ------------------- ------------------- -------------- -------------------
                                                 (unaudited)      (unaudited)       (unaudited)
Weighted average common
 shares used to compute
 basic net loss per
 share..................      3,303,942           2,827,012         4,600,650        3,563,284
Effect of Dilutive
 securities.............             --                  --                --               --
                              ---------           ---------        ----------        ---------
Weighted average common
 shares used to compute
 dilutive net loss per
 share..................      3,303,942           2,827,012         4,600,650        3,563,284
                              =========           =========        ==========        =========
Conversion of preferred
 stock..................      4,424,978           1,748,933        12,104,538        5,960,890
                              ---------           ---------        ----------        ---------
Weighted average common
 shares used to compute
 pro forma basic and
 diluted net loss per
 share..................      7,728,920           4,575,945        16,705,188        9,524,174
                              =========           =========        ==========        =========

Pro forma net loss per share is computed using the weighted average number of common shares outstanding, including the pro forma effects of the automatic conversion of the Company's Series A, B and C Preferred Stock into shares of the Company's Common Stock effective upon the closing of the Company's Initial Public Offering as if such conversion occurred at inception or the date of original issuance, if later. Pro forma diluted earnings per share is computed using the pro forma weighted average number of common and common equivalents shares outstanding during the period, to the extent such shares are dilutive.

Property and Equipment

Property and equipment are stated at cost. Depreciation and amortization is computed principally on a straight-line method over the estimated useful lives of the assets ranging from three to five years. Assets acquired under capitalized lease arrangements are recorded at the present value of the minimum lease payments. Amortization of assets capitalized under capital leases is computed using the straight-line method over the life of the asset or term of the lease, whichever is shorter. Expenditures for repairs and maintenance are charged to expense as incurred.

Patents, Trademarks and Other Intangibles

Patents, trademarks and other intangibles are carried at cost less accumulated amortization that is calculated on a straight-line basis over the estimated useful lives of the assets, not to exceed 40 years. Patents are currently amortized over an estimated useful live of 17 years. Trademarks and other intangibles have useful lives that range from 5 to 15 years. Accumulated amortization as of December 31, 1998 is $1,846.

F-8

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

Income Taxes

The Company accounts for income taxes in accordance with FASB 109, "Accounting for Income Taxes." Under this method, deferred tax liabilities and assets are determined based on the difference between the financial statements and the tax basis of assets and liabilities using the enacted tax rate in effect for the years in which the differences are expected to reverse.

Research and Development Costs

Research and development costs are expensed as incurred. These costs primarily consist of salaries, development materials, supplies and applicable overhead expenses of personnel directly involved in the research and development of new technology and products.

Stock-Based Compensation

SFAS No. 123, "Accounting for Stock-Based Compensation" (SFAS 123) encourages, but does not require, companies to record compensation cost for stock-based employee compensation plans at fair value. The Company has chosen to continue to account for stock-based compensation using the intrinsic-value method prescribed in Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees."

2. Line of Credit

On May 1, 1998, the Company entered into a credit line agreement with a lender. The initial $300,000 borrowing base was increased to $1 million based on the Company's net equity balance, as defined, through December 31, 1998. Borrowings bear interest at the lender's prime rate plus 1% (8.75% at December 31, 1998) and are collateralized by certain of the Company's assets. The Company used the amount drawn for working capital purposes. The unpaid balance due under the line of credit at February 9, 1999 may be converted to a term loan payable in 24 equal monthly installments commencing on such date. Otherwise, the credit line agreement matures on October 8, 1999.

In connection with this indebtedness agreement, the Company issued a detachable warrant which permits the holder to purchase 4,700 shares of the Company's Series A Preferred Stock for $.40 per share. The term of this warrant is for a period of seven years from the date of grant.

3. Income Taxes

The provision for income taxes consists solely of minimum state taxes. The Company's effective tax rate differs from the statutory federal income tax rate primarily as a result of the establishment of a valuation allowance for the future benefits to be received from the net operating loss carryforwards and research tax credit carryforwards. The tax effect of temporary differences that give rise to a significant portion of the deferred tax assets and liabilities at December 31, 1998 are presented below.

Deferred tax assets (liabilities):
  Net operating loss carryforwards.............................  $   537,154
  Research credits.............................................      150,000
  Depreciation.................................................      (28,006)
  Capitalized start-up costs...................................      988,403
  Accruals.....................................................       46,068
                                                                 -----------
Total deferred tax assets......................................    1,693,619
Valuation allowance............................................   (1,693,619)
                                                                 -----------
Net deferred tax assets........................................  $        --
                                                                 ===========

F-9

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

Because the Company is uncertain when it may realize the benefits of its favorable tax attributes in future returns, the Company has placed a valuation allowance against its otherwise recognizable deferred tax assets. In 1998, the valuation allowance recorded was $1,693,619.

The Company has a net operating loss carryforward for federal and state income tax purposes at December 31, 1998 of $1,348,467, and an available tax credit carryforward at December 31, 1998 of $150,000, each of which can be carried forward to offset future taxable income, if any. The Company's federal net operating loss expires starting in 2018, state net operating loss expires starting in 2006, and credits expire starting in 2018. The Federal Tax Reform Act of 1986 and similar state tax laws contain provisions which may limit the net operating losses carryforwards to be used in any given year upon the occurrence of certain events, including a significant change in ownership interests.

4. Capital Leases, Commitments and Contingencies

The Company leases certain equipment under capital lease arrangements expiring on various dates through 2001. Included in property and equipment are the following assets held under capital lease at December 31, 1998:

Computer equipment................................................ $ 554,698
Accumulated depreciation..........................................   (58,129)
                                                                   ---------
                                                                   $ 496,569
                                                                   =========

The following is a schedule of future minimum lease payments:

Year ending December 31, 1998:
1999............................................................. $254,148
2000.............................................................  254,520
2001.............................................................   31,007
                                                                  --------
                                                                   539,675
Less amount representing interest................................  (66,922)
                                                                  --------
Present value of net minimum lease payments ($207,683 payable
  currently)..................................................... $472,753
                                                                  ========

The Company currently rents its facilities on a month-to-month basis or for terms less than one year. Total rent expense for the period from January 9,1998 through December 31, 1998 was $109,428 and includes $23,400 paid to a stockholder/officer for rental of office space.

In December 1998, the Company entered into a Distribution and Marketing Agreement with America Online (AOL) that provides broad distribution and marketing campaigns amongst AOL's diverse properties. In exchange for these services, the Company is required to make minimum payments that approximate $1,700,000 and $525,000 in 1999 and 2000, respectively.

5. Stock Options

In January 1998, the Company adopted the 1998 Stock Option Plan (the Plan) which authorizes the Board of Directors to grant incentive stock options, nonqualified stock options and stock purchase rights (collectively options) to employees, directors, consultants and advisors of the Company. The maximum number of shares of common stock to be issued under the Plan is 3,235,000. All options granted under the Plan have been made at prices not less than fair value of the stock at the date of grant, as determined by the Board of Directors. Options granted under the Plan are generally exercisable immediately however they vest 25% per year; however, the Board of Directors has the discretion with respect to vesting periods applicable to a particular grant.

F-10

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

The following tabulation summarizes certain information related to options for common stock:

                                                                     Weighted
                                                                     Average
                                                          Number of  Exercise
                                                           Shares     Price
                                                          ---------  --------
Outstanding options at January 9, 1998...................        --    $ --
Grants................................................... 1,564,981     .09
Surrendered, forfeited or expired........................   (24,375)    .05
Exercised................................................        --      --
                                                          ---------    ----
Outstanding options at December 31, 1998................. 1,540,606    $.09
                                                          =========    ====

As of December 31, 1998, all options were exercisable. However no options were vested and 1,694,394 were available for future grant. The weighted average remaining contractual life of the outstanding stock options at December 31, 1998, is 9.7 years.

Pro forma information regarding net loss is required by SFAS 123, and has been determined as if the Company had accounted for its employee stock options under the fair-value method of that statement. The fair value for these options was estimated at the date of grant using the minimum-value method, which utilizes a near-zero volatility factor. The remaining assumptions, which are weighted average, under this method are as follows:

Expected life (years).............................................    5
Risk-free interest rate........................................... 5.50%
Dividend yield....................................................   --

This option-valuation method requires input of highly subjective assumptions. Because the Company's employee stock options have characteristics significantly different from those of traded options, and because change in the subjective input assumptions can materially affect the fair value estimate, in management's opinion, the existing method does not necessarily provide a reliable single measure of the fair value of its employee stock options. The effects of applying SFAS 123 in this pro forma disclosure are not indicative of future amounts and additional awards in future years are anticipated.

If the Company recognized employee stock related compensation expense in accordance with SFAS 123 under the minimum value method, its net loss for 1998 would not be materially different.

6. Equity

During 1998, the Company issued restricted stock to an employee and a director totaling 1,325,650 shares. These shares vest one-fourth on May 30, 1999 and the remaining shares vest monthly over thirty-six months.

In February 1998, the Company issued 3,762,500 shares of its Series A Preferred Stock at $0.40 per share and warrants which permit the holders to acquire 6,020,000 shares of the Company's its Series B Preferred Stock at $0.75 per share. In August and October 1998, 6,020,000 shares of Series B Preferred Stock were issued under these warrants.

Preferred stock is convertible to common stock on a one-for-one basis at the option of the holder at any time after issuance, subject to anti-dilution protection. Each share of Preferred Stock automatically converts to Common Stock upon (i) the sale of Common Stock by the Company in an underwritten public offering with a

F-11

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

public offering price of $2.00 per share and net proceeds of $15 million or
(ii) written consent of the majority holders of outstanding shares of Preferred Stock (see Note 7).

The holders of Preferred Stock are entitled to receive non-cumulative dividends in preference to the Common stock at a rate of $0.040 and $0.075 per share per annum, respectively, or if greater (as determined on a per annum basis and an as converted basis for Preferred Stock), an amount equal to that paid on any other outstanding share, payable quarterly when, as and if declared. No dividends can be paid or declared on any Common Stock unless full cash dividends, including past dividends declared, have been paid on the Preferred Stock.

The Series A and Series B Preferred Stock have a liquidation preference over Common Stock of $0.40 and $0.75 per share, respectively.

The Preferred Stock may be redeemed at any time after February 26, 2003 at the written consent of the majority holders of outstanding shares of Preferred Stock. The redemption price for Series A and Series B Preferred Stock is $0.40 and $0.75 per share, respectively.

In connection with the issuance of Common Stock during the period, the Company exchanged shares with a fair value of $117,000 for notes receivable of the same amount. These notes receivable bear interest at 9% per annum and are payable in February 2003.

7. Events Subsequent to the Date of the Auditors' Report (Unaudited)

Authorize Stock

On February 17, 1999, the Company increased the number of authorized shares of common stock and preferred to 40,000,000 shares and 15,500,000 shares, respectively. On February 10, 1999, the Board of Directors increased the number of shares reserved for issuance under the 1998 Stock Option Plan by 1,000,000 shares.

Preferred Stock

On February 10, 1999, the Board of Directors approved the sale of Series C Preferred Stock. In February and March 1999, the Company issued 5,464,486 shares of its Series C Preferred Stock at $5.49 per share. Series C Preferred Stock is convertible to common stock on a one-for-one basis at the option of the holder at any time after issuance, subject to anti-dilution protection. In connection with the sale of Series C Preferred Stock, the board of directors amended the certificate of incorporation and each share of Series A, Series B and Series C Preferred Stock automatically converts to Common Stock upon
(i) the sale of Common Stock by the Company in an underwritten public offer with a public offering price of at least $10.98 per share and net proceeds of $20 million or (ii) written consent of the majority of holders of outstanding shares of Preferred Stock.

The holders are entitled to receive a noncumulative dividends in preference of the Common Stock at a rate of $0.55 per share per annum or if greater (as determined on a per annum basis and as a converted bases for Preferred Stock), an amount equal to that paid on any other outstanding share, payable quarterly when, as and if declared. No dividends can be paid or declared on any Common Stock unless full cash dividends, including past dividends declared, have been paid on the Preferred Stock. The Series C Preferred Stock have a liquidation preference over Common Stock or $5.49 per share and may be redeemed at any time after February 27, 2003, at the written consent of the majority holders of outstanding shares of Preferred Stock at the redemption price of $5.49 per share.

F-12

STAMPS.COM INC.

NOTES TO FINANCIAL STATEMENTS--(Continued)

Stock options

During the three month period ending March 31, 1999, the Company issued 1,595,000 additional stock options under the 1998 stock option plan. A summary of the options granted is as follows:

                                                        Exercise Estimated
Number of options                                        Price   Fair Value
-----------------                                       -------- ----------
  299,600..............................................  $4.50     $1.07
1,295,400..............................................  $0.50     $0.12

The estimated fair value for these options was estimated at the date of grant using the minimum-value method using the same assumptions as Note 5.

F-13

[LOGO OF STAMPS.COM]


PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 13. Other Expenses of Issuance and Distribution

The following table sets forth the costs and expenses, other than underwriting discounts and commissions, payable in connection with the sale and distribution of the securities being registered. All amounts are estimated except the Securities and Exchange Commission and NASD. All of the expenses below will be paid by the Company.

                                Item
                                ----
Registration fee....................................................   15,985
NASD filing fee.....................................................    6,250
Nasdaq National Market listing fee..................................   50,000
Blue sky fees and expenses..........................................   10,000
Printing and engraving expenses.....................................  100,000
Legal fees and expenses.............................................  250,000
Accounting fees and expenses........................................  150,000
Transfer Agent and Registrar fees...................................    5,000
Miscellaneous.......................................................   62,765
  Total.............................................................  650,000

Item 14. Indemnification of Directors and Officers.

The Company's Amended and Restated Certificate of Incorporation (the "Certificate") provides that, except to the extent prohibited by the Delaware General Corporation Law (the "DGCL"), the Company's directors shall not be personally liable to the Company or its stockholders for monetary damages for any breach of fiduciary duty as directors of the Company. Under the DGCL, the directors have a fiduciary duty to the Company which is not eliminated by this provision of the Certificate and, in appropriate circumstances, equitable remedies such as injunctive or other forms of nonmonetary relief will remain available. In addition, each director will continue to be subject to liability under the DGCL for breach of the director's duty of loyalty to the Company, for acts or omissions which are found by a court of competent jurisdiction to be not in good faith or involving intentional misconduct, for knowing violations of law, for actions leading to improper personal benefit to the director, and for payment of dividends or approval of stock repurchases or redemptions that are prohibited by DGCL. This provision also does not affect the directors' responsibilities under any other laws, such as the federal securities laws or state or federal environmental laws. The Company has obtained liability insurance for its officers and directors.

Section 145 of the DGCL empowers a corporation to indemnify its directors and officers and to purchase insurance with respect to liability arising out of their capacity or status as directors and officers, provided that this provision shall not eliminate or limit the liability of a director: (i) for any breach of the director's duty of loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) arising under
Section 174 of the DGCL, or (iv) for any transaction from which the director derived an improper personal benefit. The DGCL provides further that the indemnification permitted thereunder shall not be deemed exclusive of any other rights to which the directors and officers may be entitled under the corporation's bylaws, any agreement, a vote of stockholders or otherwise. The Certificate eliminates the personal liability of directors to the fullest extent permitted by Section 102(b)(7) of the DGCL and provides that the Company shall fully indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding (whether civil, criminal, administrative or investigative) by reason of the fact that such person is or was a director or officer of the Company, or is or was serving at the request of the Company as a director or officer of another corporation, partnership, joint venture, trust, employee benefit plan or other enterprise, against expenses (including attorney's fees), judgments, fines and amounts paid in settlement actually and reasonably incurred by such person in connection with such action, suit or proceeding.

II-1


The Company, with the approval of the Board of Directors, intends to obtain directors' and officers' liability insurance prior to the effectiveness of this offering. In addition, the Company intends to enter into indemnification agreements with each of its directors and executive officers, a form of which is filed as Exhibit 10.20 hereto.

There is no pending litigation or proceeding involving any director, officer, employee or agent of the Company in which indemnification will be required or permitted. Moreover, the Company is not aware of any threatened litigation or proceeding that might result in a claim for such indemnification. The Company believes that the foregoing indemnification provisions and agreements are necessary to attract and retain qualified persons as directors and executive officers.

The Underwriting Agreement (the form of which is filed as Exhibit 1.1 hereto) provides for indemnification by the Underwriters of the Company and its officers and directors, and by the Company of the Underwriters, for certain liabilities arising under the Securities Act or otherwise.

Item 15. Recent Sales of Unregistered Securities.

The following is a summary of transactions by the Company since the Company's inception in September 1996 involving sales of the Company's securities that were not registered under the Securities Act. Prior to the Company's incorporation in Delaware in January 1998, it had been operating as a sole proprietorship.

On January 20, 1998, we issued an aggregate of 3,265,000 shares of Common Stock at $.02 per share to certain employees, consultants and friends of the company.

On May 1, 1998, we granted a warrant to a lender to purchase up to 4,700 shares of Series A Preferred Stock at $0.40 per share.

In October 1998, we issued an aggregate of 205,250 shares of Common Stock at $.08 per share to Thomas Bruggere.

In November 1998, we issued an aggregate of 1,000,000 shares of Common Stock at $.10 per share to John Payne.

In December 1998, we issued an aggregate of 120,400 shares of Common Stock at $.10 per share to Thomas Bruggere.

In December 1998, we issued 10,000 shares of Common Stock to Gregory Deeter in exchange for all rights and goodwill in connection with the Stamps.com domain name.

In January and February of 1998, we issued an aggregate of 3,762,500 shares of our Series A Preferred Stock to certain accredited investors for an aggregate offering price of $1,505,000 less $42,000 in offering expenses.

In August, October and November of 1998, we issued an aggregate of 6,020,000 shares of Series B Preferred Stock upon the exercise of warrants to certain accredited investors for an aggregate offering price of $4,515,000.50.

In February and March of 1999, we issued an aggregate of 5,464,486 shares of Series C Preferred Stock to certain accredited investors for an aggregate offering price of $30,000,028, less $1,645,000 in offering expenses.

II-2


From January 1998 to April 1999, we have granted options to purchase an aggregate of 3,342,906 shares of common stock to our directors, executive officers, employees and consultants at a weighted exercise price of $ .

The foregoing transactions were effected under Section 4(2) of the Securities Act.

Item 16. Exhibits and Financial Statement Schedules.

(a) Exhibits

The following Exhibits are attached hereto and incorporated herein by reference:

Exhibit
Number                                Description
-------                               -----------
 1.1*   Form of Underwriting Agreement.

 3.1**  Second Amended and Restated Certificate of Incorporation of the
        Registrant.

 3.2*   Proposed Amended and Restated Certificate of Incorporation of the
        Registrant.

 3.3**  Bylaws of the Registrant.

 3.4*   Proposed Bylaws of the Registrant.

 4.1**  See Exhibit 3.1, 3.2 and 3.3 for provisions of the Registrant's
        Certificate of Incorporation and Bylaws defining the rights of holders
        of the Registrant's common stock. See Exhibit 10.3 for the rights of
        certain holders of registration rights.

 4.2*   Specimen common stock certificate.

 5.1*   Opinion of Brobeck, Phleger & Harrison LLP.

10.1**  Series A Stock Purchase Warrant dated May 1, 1998 between the
        Registrant and Silicon Valley Bank.

10.2**  Amended and Restated Investors' Rights Agreement dated February 17,
        1999 between the Registrant and the investors named therein.

10.3**  Patent Assignment from Mohan P. Ananda to the Registrant dated January
        20, 1998.

10.4**  Assignment and License Agreement between the Registrant and Mohan P.
        Ananda dated January 20, 1998.

10.5**  Employment Offer Letter dated October 29, 1998 by and between the
        Registrant and John M. Payne.

10.6**  Employment Agreement dated January 20, 1998 by and between the
        Registrant and Mohan P. Ananda.

10.7    1998 Stock Plan and Forms of Notice of Grant and Stock Option
        Agreement.

10.8**  1999 Stock Incentive Plan.

10.9**  1999 Employee Stock Purchase Plan

10.10** Form of Indemnification Agreement between the Registrant and its
        directors and officers.

10.11** Lease Agreement dated August 27, 1998 between the Registrant and
        Spieker Properties, L.P. and Amendment No. One dated January 8, 1999.

II-3


Exhibit
Number                                Description
-------                               -----------
10.12+  Advertising Insertion Order dated December 16, 1998 between the
        Registrant and America Online, Inc.

10.13** Master Lease Agreement between the Registrant and FirstCorp dated June
        5, 1998.

10.14** Quick Start Loan and Security Agreement dated May 1, 1998 between the
        Registrant and Silicon Valley Bank.

10.15** Employment Offer Letter dated August 7, 1998 between the Registrant
        and John W. LaValle.

10.16** Consulting Agreement dated February 1, 1999 between the Registrant and
        Loren Smith.

23.1*   Consent of Brobeck, Phleger & Harrison LLP (Included in Exhibit 5.1
        hereto).

23.2    Consent of Arthur Andersen LLP.

24.1**  Power of Attorney (Included on signature pages hereto).

27.1**  Financial Data Schedule.


* To be filed by amendment.

** Previously filed by the registrant with the Commission.

+ Confidential treatment is requested for certain confidential portions of this exhibit pursuant to Rule 406 under the Securities Act. In accordance with Rule 406, these confidential portions have been omitted from this exhibit and filed separately with the Commission.

(b) Financial Statement Schedules

All such Schedules have been omitted because the information required to be set forth therein is not applicable or is shown in the financial statements or notes thereto.

Item 17. Undertakings.

The undersigned Company hereby undertakes to provide to the Underwriters at the closing specified in the Underwriting Agreements, certificates in such denominations and registered in such names as required by the Underwriters to permit prompt delivery to each purchaser.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Company pursuant to the foregoing provisions, or otherwise, the Company has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Company of expenses incurred or paid by a director, officer or controlling person of the Company in the successful defense of any action, suit, or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Company will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

The undersigned Company hereby undertakes that:

(1) For purposes of determining any liability under the Securities Act of 1933, the information omitted from the form of prospectus as filed as part of this Registration Statement in reliance upon Rule 430A and contained in a form of prospectus filed by us pursuant to Rule 424(b)(1) or (4) or 497(h) under the Securities Act shall be deemed to be part of this Registration Statement as of the time it was declared effective.

(2) For the purpose of determining any liability under the Securities Act of 1933, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

II-4


SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, we have duly caused this Amendment No. 1 to the Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Santa Monica, State of California, on the 13th day of May 1999.

STAMPS.COM INC.

By:      /s/ John M. Payne
  -----------------------------------
            John M. Payne

Pursuant to the requirements of the Securities Act of 1933, this Amendment No. 1 to the Registration Statement on Form S-1 has been signed by the following persons in the capacities and on the dates indicated:

             Signature                           Title                    Date
             ---------                           -----                    ----
        /s/ John M. Payne            Chief Executive Officer,         May 13, 1999
____________________________________  President and Director
           John M. Payne              (Principal Executive
                                      Officer)


       /s/ John W. LaValle           Chief Financial Officer,         May 13, 1999
____________________________________  Senior Vice President of
          John W. LaValle             Operations and Secretary
                                      (Principal Financial and
                                      Accounting Officer)

        Thomas H. Bruggere*          Chairman of the Board of         May 13, 1999
____________________________________  Directors
         Thomas H. Bruggere

          Mohan P. Ananda*           Director                         May 13, 1999
____________________________________
          Mohan P. Ananda

         David C. Bohnett*           Director                         May 13, 1999
____________________________________
          David C. Bohnett

         Jeffrey J. Brown*           Director                         May 13, 1999
____________________________________
          Jeffrey J. Brown

II-5


             Signature                           Title                    Date
             ---------                           -----                    ----
         Thomas N. Clancy*           Director                         May 13, 1999
____________________________________
          Thomas N. Clancy


         G. Bradford Jones*          Director                         May 13, 1999
____________________________________
         G. Bradford Jones

           Marvin Runyon*            Director                         May 13, 1999
____________________________________
           Marvin Runyon

          Loren E. Smith*            Director                         May 13, 1999
____________________________________
           Loren E. Smith

* Power of Attorney

By:

/s/ John W. LaValle
----------------------------

   John W. LaValle

Attorney-in-fact

II-6


EXHIBIT INDEX

Exhibit
Number                                Description
-------                               -----------
 1.1*   Form of Underwriting Agreement.

 3.1**  Second Amended and Restated Certificate of Incorporation of the
        Registrant.

 3.2*   Proposed Amended and Restated Certificate of Incorporation of the
        Registrant.

 3.3**  Bylaws of the Registrant.

 3.4*   Proposed Bylaws of the Registrant.

 4.1**  See Exhibit 3.1, 3.2 and 3.3 for provisions of the Registrant's
        Certificate of Incorporation and Bylaws defining the rights of holders
        of the Registrant's common stock. See Exhibit 10.3 for the rights of
        certain holders of registration rights.

 4.2*   Specimen common stock certificate.

 5.1*   Opinion of Brobeck, Phleger & Harrison LLP.

10.1**  Series A Stock Purchase Warrant dated May 1, 1998 between the
        Registrant and Silicon Valley Bank.

10.2**  Amended and Restated Investors' Rights Agreement dated February 17,
        1999 between the Registrant and the investors named therein.

10.3**  Patent Assignment from Mohan P. Ananda to the Registrant dated January
        20, 1998.

10.4**  Assignment and License Agreement between the Registrant and Mohan P.
        Ananda dated January 20, 1998.

10.5**  Employment Offer Letter dated October 29, 1998 by and between the
        Registrant and John M. Payne.

10.6**  Employment Agreement dated January 20, 1998 by and between the
        Registrant and Mohan P. Ananda.

10.7    1998 Stock Plan and Forms of Notice of Grant and Stock Option
        Agreement.

10.8**  1999 Stock Incentive Plan.

10.9**  1999 Employee Stock Purchase Plan

10.10** Form of Indemnification Agreement between the Registrant and its
        directors and officers.

10.11** Lease Agreement dated August 27, 1998 between the Registrant and
        Spieker Properties, L.P. and Amendment No. One dated January 8, 1999.
10.12+  Advertising Insertion Order dated December 16, 1998 between the
        Registrant and America Online, Inc.

10.13** Master Lease Agreement between the Registrant and FirstCorp dated June
        5, 1998.

10.14** Quick Start Loan and Security Agreement dated May 1, 1998 between the
        Registrant and Silicon Valley Bank.

10.15** Employment Offer Letter dated August 7, 1998 between the Registrant
        and John W. LaValle.

10.16** Consulting Agreement dated February 1, 1999 between the Registrant and
        Loren Smith.

23.1*   Consent of Brobeck, Phleger & Harrison LLP (Included in Exhibit 5.1
        hereto).

23.2    Consent of Arthur Andersen LLP.

24.1**  Power of Attorney (Included on signature pages hereto).

27.1**  Financial Data Schedule.


* To be filed by amendment.

** Previously filed by the registrant with the Commission.

+ Confidential treatment is requested for certain confidential portions of this exhibit pursuant to Rule 406 under the Securities Act. In accordance with Rule 406, these confidential portions have been omitted from this

exhibit and filed separately with the Commission.


EXHIBIT 10.7

STAMPS.COM INC.

1998 STOCK PLAN

(AS AMENDED AND RESTATED ON FEBRUARY 10, 1999 AND APRIL 22, 1999)

1. Purposes of the Plan. The purposes of this 1998 Stock Plan are to attract and retain the best available personnel for positions of substantial responsibility, to provide additional incentive to Employees and Consultants of the Company and its Subsidiaries and to promote the success of the Company's business. Options granted under the Plan may be Incentive Stock Options (as defined under Section 422 of the Code) or Nonstatutory Stock Options, as determined by the Administrator at the time of grant of an option and subject to the applicable provisions of Section 422 of the Code, as amended, and the regulations promulgated thereunder. Stock purchase rights may also be granted under the Plan.

2. Definitions. As used herein, the following definitions shall apply:

(a) "Administrator" means the Board or any of its Committees appointed pursuant to Section 4 of the Plan.

(b) "Board" means the Board of Directors of the Company.

(c) "Code" means the Internal Revenue Code of 1986, as amended.

(d) "Committee" means the Committee appointed by the Board of Directors in accordance with Section 4(a) and (b) of the Plan.

(e) "Common Stock" means the Common Stock of the Company.

(f) "Company" means Stamps.com Inc., a Delaware corporation.

(g) "Consultant" means any person, including an advisor, who is engaged by the Company or any Parent or Subsidiary to render services and is compensated for such services, and any director of the Company whether compensated for such services or not.

(h) "Continuous Status as an Employee or Consultant" means the absence of any interruption or termination of service as an Employee or Consultant. Continuous Status as an Employee or Consultant shall not be considered interrupted in the case of: (i) sick leave; (ii) military leave; (iii) any other leave of absence approved by the Administrator, provided that such leave is for a period of not more than 90 days, unless reemployment upon the expiration of such leave is guaranteed by contract or statute, or unless provided otherwise pursuant to Company policy adopted from time to time; or (iv) in the case of transfers between locations of the Company or between the Company, its Subsidiaries or their respective successors. For purposes of this Plan, a change in status from an Employee to a Consultant or from a Consultant to an Employee will not constitute an interruption of Continuous Status as an Employee or Consultant.

(i) "Employee" means any person, including officers and directors, employed by the Company or any Parent or Subsidiary of the Company, with the status of employment determined based upon such minimum number of hours or periods worked as shall be determined by the Administrator in its discretion, subject to any requirements of the Code. The payment by the Company of a director's fee to a director shall not be sufficient to constitute "employment" of such director by the Company.

(j) "Exchange Act" means the Securities Exchange Act of 1934, as amended.

(k) "Fair Market Value" means, as of any date, the fair market value of Common Stock determined as follows:

(i) If the Common Stock is listed on any established stock exchange or a national market system including without limitation the National Market of the National Association of Securities Dealers, Inc. Automated Quotation ("Nasdaq") System, its Fair Market Value shall be the closing sales price for such stock (or the closing bid, if no sales were reported), as quoted on such system or exchange, or the exchange with the greatest volume of trading in Common Stock for the last market trading day prior to the time of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable;

(ii) If the Common Stock is quoted on the Nasdaq System (but not on the National Market thereof) or regularly quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value shall be the mean between the high bid and low asked prices for the Common Stock for the last market trading day prior to the time of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable; or

(iii) In the absence of an established market for the Common Stock, the Fair Market Value thereof shall be determined in good faith by the Administrator.

(l) "Incentive Stock Option" means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code, as designated in the applicable written Option Agreement.

(m) "Nonstatutory Stock Option" means an Option not intended to qualify as an Incentive Stock Option, as designated in the applicable written Option Agreement.

(n) "Option" means a stock option granted pursuant to the Plan.

(o) "Option Agreement" means a written agreement between an Optionee and the Company reflecting the terms of an Option granted under the Plan and includes any documents attached to such Option Agreement, including, but not limited to, a notice of stock option grant and a form of exercise notice.

(p) "Optioned Stock" means the Common Stock subject to an Option or a Stock Purchase Right.

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(q) "Optionee" means an Employee or Consultant who receives an Option or a Stock Purchase Right.

(r) "Parent" means a "parent corporation," whether now or hereafter existing, as defined in Section 424(e) of the Code, or any successor provision.

(s) "Plan" means this 1998 Stock Plan, as amended and restated on

February 10, 1999.

(t) "Reporting Person" means an officer, director, or greater than 10% stockholder of the Company within the meaning of Rule 16a-2 under the Exchange Act, who is required to file reports pursuant to Rule 16a-3 under the Exchange Act.

(u) "Restricted Stock" means shares of Common Stock acquired pursuant to a grant of a Stock Purchase Right under Section 10 below.

(v) "Restricted Stock Purchase Agreement" means a written agreement between a holder of a Stock Purchase Right and the Company reflecting the terms of a Stock Purchase Right granted under the Plan and includes any documents attached to such agreement.

(w) "Rule 16b-3" means Rule 16b-3 promulgated under the Exchange Act, as the same may be amended from time to time, or any successor provision.

(x) "Share" means a share of the Common Stock, as adjusted in accordance with Section 12 of the Plan.

(y) "Stock Exchange" means any stock exchange or consolidated stock price reporting system on which prices for the Common Stock are quoted at any given time.

(z) "Stock Purchase Right" means the right to purchase Common Stock pursuant to Section 10 below.

(aa) "Subsidiary" means a "subsidiary corporation," whether now or hereafter existing, as defined in Section 424(f) of the Code, or any successor provision.

3. Stock Subject to the Plan. Subject to the provisions of Section 12 of the Plan, the maximum aggregate number of Shares that may be optioned and sold under the Plan is limited to 4,235,000 shares of Common Stock. Such share reserve consists of (i) the 3,235,000 Shares initially reserved for issuance, plus (ii) an additional 1,000,000 Shares authorized for issuance by the Board on February 10, 1999, subject to stockholder approval. The Shares may be authorized, but unissued, or reacquired Common Stock. If an Option should expire or become unexercisable for any reason without having been exercised in full, the unpurchased Shares that were subject thereto shall, unless the Plan shall have been terminated, become available for future grant under the Plan. In addition, any Shares of Common Stock which are retained by the Company upon exercise of an Option or Stock Purchase Right in order to satisfy the exercise or purchase price for such Option or Stock Purchase Right or any withholding taxes due with

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respect to such exercise shall be treated as not issued and shall continue to be available under the Plan. Shares repurchased by the Company pursuant to any repurchase right which the Company may have shall not be available for future grant under the Plan.

4. Administration of the Plan.

(a) Initial Plan Procedure. Prior to the date, if any, upon which the Company becomes subject to the Exchange Act, the Plan shall be administered by the Board or a Committee appointed by the Board.

(b) Plan Procedure After the Date, if any, Upon Which the Company
Becomes Subject to the Exchange Act.

(i) Multiple Administrative Bodies. If permitted by Rule 16b- 3, grants under the Plan may be made by different bodies with respect to directors, non-director officers and Employees or Consultants who are not Reporting Persons.

(ii) Administration With Respect to Reporting Persons. With respect to grants of Options or Stock Purchase Rights to Employees who are Reporting Persons, such grants shall be made by (A) the Board if the Board may make grants to Reporting Persons under the Plan in compliance with Rule 16b-3, or (B) a Committee designated by the Board to make grants to Reporting Persons under the Plan, which Committee shall be constituted in such a manner as to permit grants under the Plan to comply with Rule 16b-3. Once appointed, such Committee shall continue to serve in its designated capacity until otherwise directed by the Board. From time to time the Board may increase the size of the Committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in substitution therefor, fill vacancies, however caused, and remove all members of the Committee and thereafter directly make grants to Reporting Persons under the Plan, all to the extent permitted by Rule 16b-3.

(iii) Administration With Respect to Consultants and Other Employees. With respect to grants of Options or Stock Purchase Rights to Employees or Consultants who are not Reporting Persons, the Plan shall be administered by (A) the Board or (B) a Committee designated by the Board, which Committee shall be constituted in such a manner as to satisfy the legal requirements relating to the administration of Incentive Stock Option plans, if any, of applicable corporate and securities laws, of the Code and of any applicable Stock Exchange (the "Applicable Laws"). Once appointed, such Committee shall continue to serve in its designated capacity until otherwise directed by the Board. From time to time the Board may increase the size of the Committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in substitution therefor, fill vacancies, however caused, and remove all members of the Committee and thereafter directly administer the Plan, all to the extent permitted by the Applicable Laws.

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(c) Powers of the Administrator. Subject to the provisions of the Plan and in the case of a Committee, the specific duties delegated by the Board to such Committee, and subject to the approval of any relevant authorities, including the approval, if required, of any Stock Exchange, the Administrator shall have the authority, in its discretion:

(i) to determine the Fair Market Value of the Common Stock, in accordance with Section 2(k) of the Plan;

(ii) to select the Consultants and Employees to whom Options and Stock Purchase Rights or any combination thereof may from time to time be granted hereunder;

(iii) to determine whether and to what extent Options and Stock Purchase Rights or any combination thereof are granted hereunder;

(iv) to determine the number of shares of Common Stock to be covered by each such award granted hereunder;

(v) to approve forms of agreement for use under the Plan;

(vi) to determine the terms and conditions, not inconsistent with the terms of the Plan, of any award granted hereunder;

(vii) to determine whether and under what circumstances an Option may be settled in cash under Section 9(f) instead of Common Stock;

(viii) to reduce the exercise price of any Option to the then current Fair Market Value if the Fair Market Value of the Common Stock covered by such Option shall have declined since the date the Option was granted;

(ix) to determine the terms and restrictions applicable to Stock Purchase Rights and the Restricted Stock purchased by exercising such Stock Purchase Rights;

(x) to construe and interpret the terms of the Plan and awards granted pursuant to the Plan; and

(xi) in order to fulfill the purposes of the Plan and without amending the Plan, to modify grants of Options or Stock Purchase Rights to participants who are foreign nationals or employed outside of the United States in order to recognize differences in local law, tax policies or customs.

(d) Effect of Administrator's Decision. All decisions, determinations and interpretations of the Administrator shall be final and binding on all holders of Options or Stock Purchase Rights.

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5. Eligibility.

(a) Recipients of Grants. Nonstatutory Stock Options and Stock Purchase Rights may be granted to Employees and Consultants. Incentive Stock Options may be granted only to Employees. An Employee or Consultant who has been granted an Option or Stock Purchase Right may, if he or she is otherwise eligible, be granted additional Options or Stock Purchase Rights.

(b) Type of Option. Each Option shall be designated in the Option Agreement as either an Incentive Stock Option or a Nonstatutory Stock Option. However, notwithstanding such designations, to the extent that the aggregate Fair Market Value of Shares with respect to which Options designated as Incentive Stock Options are exercisable for the first time by any Optionee during any calendar year (under all plans of the Company or any Parent or Subsidiary) exceeds $100,000, such excess Options shall be treated as Nonstatutory Stock Options. For purposes of this Section 5(b), Incentive Stock Options shall be taken into account in the order in which they were granted, and the Fair Market Value of the Shares subject to an Incentive Stock Option shall be determined as of the date of the grant of such Option.

(c) The Plan shall not confer upon the holder of any Option or Stock Purchase Right any right with respect to continuation of employment or consulting relationship with the Company, nor shall it interfere in any way with such holder's right or the Company's right to terminate his or her employment or consulting relationship at any time, with or without cause.

6. Term of Plan. The Plan shall become effective upon the earlier to occur of its adoption by the Board of Directors or its approval by the stockholders of the Company as described in Section 19 of the Plan. It shall continue in effect for a term of ten years unless sooner terminated under
Section 15 of the Plan.

7. Term of Option. The term of each Option shall be the term stated in the Option Agreement; provided, however, that the term shall be no more than ten years from the date of grant thereof or such shorter term as may be provided in the Option Agreement and provided further that, in the case of an Incentive Stock Option granted to an Optionee who, at the time the Option is granted, owns stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the term of the Option shall be five years from the date of grant thereof or such shorter term as may be provided in the Option Agreement.

8. Option Exercise Price and Consideration.

(a) The per share exercise price for the Shares to be issued pursuant to exercise of an Option shall be such price as is determined by the Board and set forth in the applicable agreement, but shall be subject to the following:

(i) In the case of an Incentive Stock Option that is:

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(A) granted to an Employee who, at the time of the grant of such Incentive Stock Option, owns stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of grant.

(B) granted to any other Employee, the per Share exercise price shall be no less than 100% of the Fair Market Value per Share on the date of grant.

(ii) In the case of a Nonstatutory Stock Option that is:

(A) granted to a person who, at the time of the grant of such Option, owns stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of the grant.

(B) granted to any person, the per Share exercise price shall be no less than 85% of the Fair Market Value per Share on the date of grant.

(b) The consideration to be paid for the Shares to be issued upon exercise of an Option, including the method of payment, shall be determined by the Administrator (and, in the case of an Incentive Stock Option, shall be determined at the time of grant) and may consist entirely of (1) cash, (2) check, (3) promissory note (subject to the provisions of Section 153 of the Delaware General Corporation Law), (4) other Shares that (x) in the case of Shares acquired upon exercise of an Option, have been owned by the Optionee for more than six months on the date of surrender or such other period as may be required to avoid a charge to the Company's earnings, and (y) have a Fair Market Value on the date of surrender equal to the aggregate exercise price of the Shares as to which such Option shall be exercised, (5) authorization for the Company to retain from the total number of Shares as to which the Option is exercised that number of Shares having a Fair Market Value on the date of exercise equal to the exercise price for the total number of Shares as to which the Option is exercised, (6) delivery of a properly executed exercise notice together with such other documentation as the Administrator and the broker, if applicable, shall require to effect an exercise of the Option and delivery to the Company of the sale or loan proceeds required to pay the exercise price and any applicable income or employment taxes, (7) delivery of an irrevocable subscription agreement for the Shares that irrevocably obligates the option holder to take and pay for the Shares not more than twelve months after the date of delivery of the subscription agreement, (8) any combination of the foregoing methods of payment, or (9) such other consideration and method of payment for the issuance of Shares to the extent permitted under the Applicable Laws. In making its determination as to the type of consideration to accept, the Administrator shall consider if acceptance of such consideration may be reasonably expected to benefit the Company.

9. Exercise of Option.

(a) Procedure for Exercise; Rights as a Stockholder. Any Option granted hereunder shall be exercisable at such times and under such conditions as determined by the Administrator and reflected in the Option Agreement, which may include vesting requirements

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and/or performance criteria with respect to the Company and/or the Optionee; provided, however, that such Option shall become exercisable at the rate of at least 20% per year over five years from the date the Option is granted. In the event that any of the Shares issued upon exercise of an Option should be subject to a right of repurchase in the Company's favor, such repurchase right shall lapse at the rate of at least 20% per year over five years from the date the Option is granted. Notwithstanding the above, in the case of an Option granted to an officer, director or Consultant of the Company or any Parent or Subsidiary of the Company, the Option may become fully exercisable, and a repurchase right, if any, in favor of the Company shall lapse, at any time or during any period established by the Administrator.

An Option may not be exercised for a fraction of a Share.

An Option shall be deemed to be exercised when written notice of such exercise has been given to the Company in accordance with the terms of the Option by the person entitled to exercise the Option and the Company has received full payment for the Shares with respect to which the Option is exercised. Full payment may, as authorized by the Board, consist of any consideration and method of payment allowable under Section 8(b) of the Plan. Until the issuance (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company) of the stock certificate evidencing such Shares, no right to vote or receive dividends or any other rights as a stockholder shall exist with respect to the Optioned Stock, not withstanding the exercise of the Option. The Company shall issue (or cause to be issued) such stock certificate promptly upon exercise of the Option. No adjustment will be made for a dividend or other right for which the record date is prior to the date the stock certificate is issued, except as provided in
Section 12 of the Plan.

Exercise of an Option in any manner shall result in a decrease in the number of Shares that thereafter may be available, both for purposes of the Plan and for sale under the Option, by the number of Shares as to which the Option is exercised.

(b) Termination of Employment or Consulting Relationship. Subject to Section 9(c) below, in the event of termination of an Optionee's Continuous Status as an Employee or Consultant with the Company, such Optionee may, but only within three months (or such other period of time not less than 30 days as is determined by the Administrator, with such determination in the case of an Incentive Stock Option being made at the time of grant of the Option and not exceeding three months) after the date of such termination (but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), exercise his or her Option to the extent that the Optionee was entitled to exercise it at the date of such termination. To the extent that the Optionee was not entitled to exercise the Option at the date of such termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate. No termination shall be deemed to occur and this Section 9(b) shall not apply if
(i) the Optionee is a Consultant who becomes an Employee, or (ii) the Optionee is an Employee who becomes a Consultant.

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(c) Disability of Optionee.

(i) Notwithstanding Section 9(b) above, in the event of termination of an Optionee's Continuous Status as an Employee or Consultant as a result of his or her total and permanent disability (within the meaning of
Section 22(e)(3) of the Code), such Optionee may, but only within twelve months from the date of such termination (but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. To the extent that the Optionee was not entitled to exercise the Option at the date of termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate.

(ii) In the event of termination of an Optionee's Continuous Status as an Employee or Consultant as a result of a disability which does not fall within the meaning of total and permanent disability (as set forth in
Section 22(e)(3) of the Code), such Optionee may, but only within six months from the date of such termination (but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. However, to the extent that such Optionee fails to exercise an Option which is an Incentive Stock Option (within the meaning of Section 422 of the Code) within three months of the date of such termination, the Option will not qualify for Incentive Stock Option treatment under the Code. To the extent that the Optionee was not entitled to exercise the Option at the date of termination, or if the Optionee does not exercise such Option to the extent so entitled within six months from the date of termination, the Option shall terminate.

(d) Death of Optionee. In the event of the death of an Optionee during the period of Continuous Status as an Employee or Consultant since the date of grant of the Option, or within 30 days following termination of the Optionee's Continuous Status as an Employee or Consultant, the Option may be exercised, at any time within six months following the date of death (but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), by such Optionee's estate or by a person who acquired the right to exercise the Option by bequest or inheritance, but only to the extent of the right to exercise that had accrued at the date of death or, if earlier, the date of termination of the Optionee's Continuous Status as an Employee or Consultant. To the extent that the Optionee was not entitled to exercise the Option at the date of death or termination, as the case may be, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate.

(e) Rule 16b-3. Options granted to Reporting Persons shall comply with Rule 16b-3 and shall contain such additional conditions or restrictions as may be required thereunder to qualify for the maximum exemption for Plan transactions.

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10. Stock Purchase Rights.

(a) Rights to Purchase. Stock Purchase Rights may be issued either alone, in addition to, or in tandem with other awards granted under the Plan and/or cash awards made outside of the Plan. After the Administrator determines that it will offer Stock Purchase Rights under the Plan, it shall advise the offeree in writing of the terms, conditions and restrictions related to the offer, including the number of Shares that such person shall be entitled to purchase, the price to be paid (which price shall not be less than 85% of the Fair Market Value of the Shares as of the date of the offer, or, in the case of a person owning stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the price shall not be less than 100% of the Fair Market Value of the Shares as of the date of the offer), and the time within which such person must accept such offer, which shall in no event exceed 30 days from the date upon which the Administrator made the determination to grant the Stock Purchase Right. The offer shall be accepted by execution of a Restricted Stock Purchase Agreement in the form determined by the Administrator.

(b) Repurchase Option. Unless the Administrator determines otherwise, the Restricted Stock Purchase Agreement shall grant the Company a repurchase option exercisable upon the voluntary or involuntary termination of the purchaser's employment with the Company for any reason (including death or disability). The purchase price for Shares repurchased pursuant to the Restricted Stock Purchase Agreement shall be the original purchase price paid by the purchaser and may be paid by cancellation of any indebtedness of the purchaser to the Company. The repurchase option shall lapse at such rate as the Administrator may determine; provided, however, that with respect to an Optionee who is not an officer, director or Consultant of the Company or of any Parent or Subsidiary of the Company, it shall lapse at a minimum rate of 20% per year.

(c) Other Provisions. The Restricted Stock Purchase Agreement shall contain such other terms, provisions and conditions not inconsistent with the Plan as may be determined by the Administrator in its sole discretion. In addition, the provisions of Restricted Stock Purchase Agreements need not be the same with respect to each purchaser.

(d) Rights as a Stockholder. Once the Stock Purchase Right is exercised, the purchaser shall have the rights equivalent to those of a stockholder, and shall be a stockholder when his or her purchase is entered upon the records of the duly authorized transfer agent of the Company. No adjustment will be made for a dividend or other right for which the record date is prior to the date the Stock Purchase Right is exercised, except as provided in Section 12 of the Plan.

11. Stock Withholding to Satisfy Withholding Tax Obligations. At the discretion of the Administrator, Optionees may satisfy withholding obligations as provided in this paragraph. When an Optionee incurs tax liability in connection with an Option or Stock Purchase Right, which tax liability is subject to tax withholding under applicable tax laws, and the Optionee is obligated to pay the Company an amount required to be withheld under applicable tax laws, the Optionee may satisfy the withholding tax obligation by one or some

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combination of the following methods: (a) by cash or check payment, (b) out of the Optionee's current compensation, (c) if permitted by the Administrator, in its discretion, by surrendering to the Company Shares that (i) in the case of Shares previously acquired from the Company, have been owned by the Optionee for more than six months on the date of surrender, and (ii) have a fair market value on the date of surrender equal to or less than the Optionee's marginal tax rate times the ordinary income recognized, or (d) by electing to have the Company withhold from the Shares to be issued upon exercise of the Option, or the Shares to be issued in connection with the Stock Purchase Right, if any, that number of Shares having a Fair Market Value equal to the amount required to be withheld. For this purpose, the fair market value of the Shares to be withheld shall be determined on the date that the amount of tax to be withheld is to be determined (the "Tax Date").

Any surrender by a Reporting Person of previously owned Shares to satisfy tax withholding obligations arising upon exercise of this Option must comply with the applicable provisions of Rule 16b-3.

All elections by an Optionee to have Shares withheld to satisfy tax withholding obligations shall be made in writing in a form acceptable to the Administrator and shall be subject to the following restrictions:

(a) the election must be made on or prior to the applicable Tax Date;

(b) once made, the election shall be irrevocable as to the particular Shares of the Option or Stock Purchase Right as to which the election is made; and

(c) all elections shall be subject to the consent or disapproval of the Administrator.

In the event the election to have Shares withheld is made by an Optionee and the Tax Date is deferred under Section 83 of the Code because no election is filed under Section 83(b) of the Code, the Optionee shall receive the full number of Shares with respect to which the Option or Stock Purchase Right is exercised but such Optionee shall be unconditionally obligated to tender back to the Company the proper number of Shares on the Tax Date.

12. Adjustments Upon Changes in Capitalization, Merger or Certain Other
Transactions.

(a) Changes in Capitalization. Subject to any required action by the stockholders of the Company, the number of shares of Common Stock covered by each outstanding Option or Stock Purchase Right, and the number of shares of Common Stock that have been authorized for issuance under the Plan but as to which no Options or Stock Purchase Rights have yet been granted or that have been returned to the Plan upon cancellation or expiration of an Option or Stock Purchase Right, as well as the price per share of Common Stock covered by each such outstanding Option or Stock Purchase Right, shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock split, reverse stock split, stock dividend, combination, recapitalization or

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reclassification of the Common Stock, or any other increase or decrease in the number of issued shares of Common Stock effected without receipt of consideration by the Company; provided, however, that conversion of any convertible securities of the Company shall not be deemed to have been "effected without receipt of consideration." Such adjustment shall be made by the Board, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no issuance by the Company of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares of Common Stock subject to an Option or Stock Purchase Right.

(b) Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Board shall notify the Optionee at least 15 days prior to such proposed action. To the extent it has not been previously exercised, the Option or Stock Purchase Right will terminate immediately prior to the consummation of such proposed action.

(c) Merger or Sale of Assets. In the event of a proposed sale of all or substantially all of the Company's assets or a merger of the Company with or into another corporation where the successor corporation issues its securities to the Company's stockholders, each outstanding Option or Stock Purchase Right shall be assumed or an equivalent option or right shall be substituted by such successor corporation or a parent or subsidiary of such successor corporation, unless the successor corporation does not agree to assume the Option or Stock Purchase Right or to substitute an equivalent option or right, in which case such Option or Stock Purchase Right shall terminate upon the consummation of the merger or sale of assets. For purposes of this Section 12(c), an Option or a Stock Purchase Right shall be considered assumed, without limitation, if, at the time of issuance of the stock or other consideration upon such merger or sale of assets, each holder of an Option or a Stock Purchase Right would be entitled to receive upon exercise of the Option or Stock Purchase Right the same number and kind of shares of stock or the same amount of property, cash or securities as such holder would have been entitled to receive upon the occurrence of such transaction if the holder had been, immediately prior to such transaction, the holder of the number of Shares of Common Stock covered by the Option or the Stock Purchase Right at such time (after giving effect to any adjustments in the number of Shares covered by the Option or Stock Purchase Right as provided for in this Section 12).

(d) Certain Distributions. In the event of any distribution to the Company's stockholders of securities of any other entity or other assets (other than dividends payable in cash or stock of the Company) without receipt of consideration by the Company, the Administrator may, in its discretion, appropriately adjust the price per share of Common Stock covered by each outstanding Option or Stock Purchase Right to reflect the effect of such distribution.

13. Non-Transferability of Options and Stock Purchase Rights. Options and Stock Purchase Rights may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other than by will or by the laws of descent or distribution and may be exercised or purchased during the lifetime of the Optionee or the holder of Stock Purchase Rights only by the Optionee or the holder of Stock Purchase Rights.

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14. Time of Granting Options and Stock Purchase Rights. The date of grant of an Option or Stock Purchase Right shall, for all purposes, be the date on which the Administrator makes the determination granting such Option or Stock Purchase Right, or such other date as is determined by the Board; provided, however, that in the case of any Incentive Stock Option, the grant date shall be the later of the date on which the Administrator makes the determination granting such Incentive Stock Option or the date of commencement of the Optionee's employment relationship with the Company. Notice of the determination shall be given to each Employee or Consultant to whom an Option or Stock Purchase Right is so granted within a reasonable time after the date of such grant.

15. Amendment and Termination of the Plan.

(a) Authority to Amend or Terminate. The Board may at any time amend, alter, suspend or discontinue the Plan, but no amendment, alteration, suspension or discontinuation shall be made that would impair the rights of any Optionee under any grant theretofore made, without his or her consent. In addition, to the extent necessary and desirable to comply with Rule 16b-3 or with Section 422 of the Code (or any other applicable law or regulation, including the requirements of any Stock Exchange), the Company shall obtain stockholder approval of any Plan amendment in such a manner and to such a degree as required.

(b) Effect of Amendment or Termination. No amendment or termination of the Plan shall adversely affect Options already granted, unless mutually agreed otherwise between the Optionee and the Board, which agreement must be in writing and signed by the Optionee and the Company.

(c) On February 10, 1999, the Board amended the Plan to increase the number of Shares reserved for issuance under the Plan by 1,000,000 Shares. No Options shall be granted, and no Stock Purchase Rights shall be issued, on the basis of the 1,000,000-Share increase approved by the Board on February 10, 1999, unless and until such Share increase is approved by the stockholders prior to February 10, 2000. Should stockholder approval not be obtained by such date, then such Share increase shall not be implemented. Subject to the foregoing limitations, the Administrator may make option grants under the Plan at any time before the date fixed herein for the termination of the Plan.

16. Conditions Upon Issuance of Shares. Shares shall not be issued pursuant to the exercise of an Option or Stock Purchase Right unless the exercise of such Option or Stock Purchase Right and the issuance and delivery of such Shares pursuant thereto shall comply with all relevant provisions of law, including, without limitation, the Securities Act of 1933, as amended, the Exchange Act, the rules and regulations promulgated thereunder, and the requirements of any Stock Exchange.

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As a condition to the exercise of an Option, the Company may require the person exercising such Option to represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company, such a representation is required by law.

17. Reservation of Shares. The Company, during the term of this Plan, will at all times reserve and keep available such number of Shares as shall be sufficient to satisfy the requirements of the Plan. The inability of the Company to obtain authority from any regulatory body having jurisdiction, which authority is deemed by the Company's counsel to be necessary to the lawful issuance and sale of any Shares hereunder, shall relieve the Company of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority shall not have been obtained.

18. Agreements. Options and Stock Purchase Rights shall be evidenced by written Option Agreements and Restricted Stock Purchase Agreements, respectively, in such form(s) as the Administrator shall approve from time to time.

19. Stockholder Approval. Continuance of the Plan shall be subject to approval by the stockholders of the Company within twelve months before or after the date the Plan is adopted. Such stockholder approval shall be obtained in the degree and manner required under applicable state and federal law and the rules of any Stock Exchange upon which the Common Stock is listed. All Options and Stock Purchase Rights issued under the Plan shall become void in the event such approval is not obtained.

20. Information and Documents to Optionees and Purchasers. The Company shall provide financial statements at least annually to each Optionee and to each individual who acquired Shares pursuant to the Plan, during the period such Optionee or purchaser has one or more Options or Stock Purchase Rights outstanding, and in the case of an individual who acquired Shares pursuant to the Plan, during the period such individual owns such Shares. The Company shall not be required to provide such information if the issuance of Options or Stock Purchase Rights under the Plan is limited to key employees whose duties in connection with the Company assure their access to equivalent information. In addition, at the time of issuance of any securities under the Plan, the Company shall provide to the Optionee or the purchaser a copy of the Plan and any agreement(s) pursuant to which securities granted under the Plan are issued.

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STAMPS.COM INC.

1998 STOCK PLAN

NOTICE OF STOCK OPTION GRANT

Optionee

You have been granted an option to purchase Common Stock ("Common Stock") of Stamps.com Inc. (the "Company") as follows:

Date of Grant:                     GrantDate

Vesting Commencement Date:         VestingCommenceDate

Exercise Price Per Share:          $ExercisePrice

Total Number of Shares Granted:    NoofShares

Total Exercise Price:              $TotalExercisePrice

Type of Option:                    NoSharesISO  Incentive Stock Option ("ISO")
                                   -----------                           ---
                                   NoSharesNSO   Nonstatutory Stock Option ("NSO")
                                   -----------                               ---

Term/Expiration Date:              ExpirDate

Vesting Schedule:                  This Option may be exercised, in whole or in part,
                                   in accordance with the following schedule:
                                   25% of the Shares subject to the Option shall vest
                                   twelve months after the Vesting Commencment
                                   Date, and 1/48th of the Shares subject to the Option
                                   shall vest each month thereafter.


Termination Period:               This Option may be exercised for 60 days after
                                  termination of employment or consulting
                                  relationship except as set out in Sections 6 and 7 of
                                  the Stock Option Agreement (but in no event later
                                  than the Expiration Date).

By your signature and the signature of the Company's representative below, you and the Company agree that this option is granted under and governed by the terms and conditions of the 1998 Stock Plan and the Stock Option Agreement, both of which are attached and made a part of this document.

Optionee                            Stamps.com Inc.


                                    By:
--------------------------------       ----------------------------------
Signature


--------------------------------       ----------------------------------
Print Name                             Print Name and Title

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STAMPS.COM INC.

1998 STOCK PLAN

STOCK OPTION AGREEMENT

1. Grant of Option. Stamps.com Inc., a Delaware corporation (the "Company"), hereby grants to Optionee ("Optionee") an option (the "Option") to
purchase a total number of shares of Common Stock (the "Shares") set forth in the Notice of Stock Option Grant, at the exercise price per share set forth in the Notice of Stock Option Grant (the "Exercise Price") subject to the terms, definitions and provisions of the Stamps.com Inc. 1998 Stock Plan (the "Plan")

adopted by the Company, which is incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Option.

If designated an Incentive Stock Option, this Option is intended to qualify as an Incentive Stock Option as defined in Section 422 of the Code.

2. Exercise of Option. This Option shall be exercisable during its Term in accordance with the Vesting Schedule set out in the Notice of Stock Option Grant and with the provisions of Section 9 of the Plan as follows:

(a) Right to Exercise.

(i) This Option may not be exercised for a fraction of a share.

(ii) In the event of Optionee's death, disability or other termination of employment or consulting relationship, the exercisability of the Option is governed by Sections 5, 6 and 7 below, subject to the limitation contained in Section 2(a)(iv) below.

(iv) In no event may this Option be exercised after the Expiration Date of this Option as set forth in the Notice of Stock Option Grant.

(b) Method of Exercise. This Option shall be exercisable by execution and delivery of the Exercise Notice and Restricted Stock Purchase Agreement attached hereto as Exhibit A (the "Exercise Agreement"), or of any other written notice approved for such purpose by the Company which shall state the election to exercise the Option, the number of Shares in respect of which the Option is being exercised, and such other representations and agreements as to the holder's investment intent with respect to such shares of Common Stock as may be required by the Company pursuant to the provisions of the Plan. Such written notice shall be signed by Optionee and shall be delivered in person or by certified mail to the Secretary of the Company. The written notice shall be accompanied by payment of the Exercise Price. This Option shall be deemed to be exercised upon receipt by the Company of such written notice accompanied by the Exercise Price.

No Shares will be issued pursuant to the exercise of an Option unless such issuance and such exercise shall comply with all relevant provisions of applicable law, including the requirements of any stock exchange upon which the Shares may then be listed. Assuming such compliance, for income tax purposes the Shares shall be considered transferred to Optionee on the date on which the Option is exercised with respect to such Shares.

3. Method of Payment. Payment of the Exercise Price shall be by any of the following, or a combination thereof, at the election of Optionee:

(a) cash;

(b) check;

(c) surrender of other shares of Common Stock of the Company which
(i) in the case of Shares acquired pursuant to the exercise of a Company option, have been owned by Optionee for more than 6 months on the date of surrender, and
(ii) have a Fair Market Value on the date of surrender equal to the Exercise Price of the Shares as to which the Option is being exercised;

(d) if there is a public market for the Shares and they are registered under the Exchange Act, delivery of a properly executed exercise notice together with irrevocable instructions to a broker to deliver promptly to the Company the amount of sale or loan proceeds required to pay the Exercise Price; or

(e) subject to Section 153 of the Delaware General Corporation Law, a promissory note in the form attached to this Agreement as Exhibit B, or in any other form approved by the Company.

4. Restrictions on Exercise. This Option may not be exercised until such time as the Plan has been approved by the shareholders of the Company, or if the issuance of such Shares upon such exercise or the method of payment of consideration for such shares would constitute a violation of any applicable federal or state securities or other law or regulation, including any rule under Part 207 of Title 12 of the Code of Federal Regulations as promulgated by the Federal Reserve Board. As a condition to the exercise of this Option, the Company may require Optionee to make any representation and warranty to the Company as may be required by any applicable law or regulation.

5. Termination of Relationship. In the event of termination of Optionee's Continuous Status as an Employee or Consultant, Optionee may, to the extent otherwise so entitled at the date of such termination (the "Termination Date"), exercise this Option during the Termination Period set forth in the Notice of Stock Option Grant. To the extent that Optionee was not entitled to exercise this Option at such Termination Date, or if Optionee does not exercise this Option within the Termination Period, the Option shall terminate.

6. Disability of Optionee.

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(a) Notwithstanding the provisions of Section 5 above, in the event of termination of Optionee's Continuous Status as an Employee or Consultant as a result of his or her total and permanent disability (as defined in Section 22(e)(3) of the Code), Optionee may, but only within twelve months from the Termination Date (but in no event later than the Expiration Date set forth in the Notice of Stock Option Grant and in Section 9 below), exercise this Option to the extent he or she was entitled to exercise it at such Termination Date. To the extent that Optionee was not entitled to exercise the Option on the Termination Date, or if Optionee does not exercise such Option to the extent so entitled within the time specified in this Section 6(a), the Option shall terminate.

(b) Notwithstanding the provisions of Section 5 above, in the event of termination of Optionee's consulting relationship or Continuous Status as an Employee as a result of a disability not constituting a total and permanent disability (as set forth in Section 22(e)(3) of the Code), Optionee may, but only within six months from the Termination Date (but in no event later than the Expiration Date set forth in the Notice of Stock Option Grant and in Section 9 below), exercise the Option to the extent Optionee was entitled to exercise it as of such Termination Date; provided, however, that if this is an Incentive Stock Option and Optionee fails to exercise this Incentive Stock Option within three months from the Termination Date, this Option will cease to qualify as an Incentive Stock Option (as defined in Section 422 of the Code) and Optionee will be treated for federal income tax purposes as having received ordinary income at the time of such exercise in an amount generally measured by the difference between the Exercise Price for the Shares and the Fair Market Value of the Shares on the date of exercise. To the extent that Optionee was not entitled to exercise the Option at the Termination Date, or if Optionee does not exercise such Option to the extent so entitled within the time specified in this Section
6(b), the Option shall terminate.

7. Death of Optionee. In the event of the death of Optionee (a) during the Term of this Option and while an Employee or Consultant of the Company and having been in Continuous Status as an Employee or Consultant since the date of grant of the Option, or (b) within 30 days after Optionee's Termination Date, the Option may be exercised at any time within six months following the date of death (but in no event later than the Expiration Date set forth in the Notice of Stock Option Grant and in Section 9 below), by Optionee's estate or by a person who acquired the right to exercise the Option by bequest or inheritance, but only to the extent of the right to exercise that had accrued at the Termination Date.

8. Non-Transferability of Option. This Option may not be transferred in any manner otherwise than by will or by the laws of descent or distribution and may be exercised during the lifetime of Optionee only by him or her. The terms of this Option shall be binding upon the executors, administrators, heirs, successors and assigns of Optionee.

9. Term of Option. This Option may be exercised only within the Term set forth in the Notice of Stock Option Grant, subject to the limitations set forth in Section 7 of the Plan.

10. Tax Consequences. Set forth below is a brief summary as of the date of this Option of certain of the federal and California tax consequences of exercise of this Option and

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disposition of the Shares under the laws in effect as of the Date of Grant. THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES.

(a) Exercise of Incentive Stock Option. If this Option qualifies as an Incentive Stock Option, there will be no regular federal or California income tax liability upon the exercise of the Option, although the excess, if any, of the Fair Market Value of the Shares on the date of exercise over the Exercise Price will be treated as an adjustment to the alternative minimum tax for federal tax purposes and may subject Optionee to the alternative minimum tax in the year of exercise.

(b) Exercise of Nonstatutory Stock Option. If this Option does not qualify as an Incentive Stock Option, there may be a regular federal income tax liability and a California income tax liability upon the exercise of the Option. Optionee will be treated as having received compensation income (taxable at ordinary income tax rates) equal to the excess, if any, of the fair market value of the Shares on the date of exercise over the Exercise Price. If Optionee is an employee, the Company will be required to withhold from Optionee's compensation or collect from Optionee and pay to the applicable taxing authorities an amount equal to a percentage of this compensation income at the time of exercise.

(c) Disposition of Shares. In the case of a Nonstatutory Stock Option, if Shares are held for at least one year, any gain realized on disposition of the Shares will be treated as long-term capital gain for federal and California income tax purposes. In the case of an Incentive Stock Option, if Shares transferred pursuant to the Option are held for at least one year after exercise and are disposed of at least two years after the Date of Grant, any gain realized on disposition of the Shares will also be treated as long-term capital gain for federal and California income tax purposes. In either case, the long-term capital gain will be taxed for federal income tax and alternative minimum tax purposes at a maximum rate of 28% if the Shares are held more than one year but less than 18 months after exercise and at 20% if the Shares are held more than 18 months after exercise. If Shares purchased under an Incentive Stock Option are disposed of within one year after exercise or within two years after the Date of Grant, any gain realized on such disposition will be treated as compensation income (taxable at ordinary income rates) to the extent of the difference between the Exercise Price and the lesser of (i) the Fair Market Value of the Shares on the date of exercise, or (ii) the sale price of the Shares.

(d) Notice of Disqualifying Disposition of Incentive Stock Option
Shares. If the Option granted to Optionee herein is an Incentive Stock Option, and if Optionee sells or otherwise disposes of any of the Shares acquired pursuant to the Incentive Stock Option on or before the later of (i) the date two years after the Date of Grant, or (ii) the date one year after the date of exercise, Optionee shall immediately notify the Company in writing of such disposition. Optionee acknowledges and agrees that he or she may be subject to income tax withholding by the Company on the compensation income recognized by Optionee from the early disposition by payment in cash or out of the current earnings paid to Optionee.

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11. Withholding Tax Obligations. Optionee understands that, upon exercising a Nonstatutory Stock Option, he or she will recognize income for tax purposes in an amount equal to the excess of the then Fair Market Value of the Shares over the Exercise Price. However, the timing of this income recognition may be deferred for up to six months if Optionee is subject to Section 16 of the Exchange Act. If Optionee is an employee, the Company will be required to withhold from Optionee's compensation, or collect from Optionee and pay to the applicable taxing authorities an amount equal to a percentage of this compensation income. Additionally, Optionee may at some point be required to satisfy tax withholding obligations with respect to the disqualifying disposition of an Incentive Stock Option. Optionee shall satisfy his or her tax withholding obligation arising upon the exercise of this Option by one or some combination of the following methods: (a) by cash payment, (b) out of Optionee's current compensation, (c) if permitted by the Administrator, in its discretion, by surrendering to the Company Shares which (i) in the case of Shares previously acquired from the Company, have been owned by Optionee for more than six months on the date of surrender, and (ii) have a Fair Market Value on the date of surrender equal to or greater than Optionee's marginal tax rate times the ordinary income recognized, or (d) by electing to have the Company withhold from the Shares to be issued upon exercise of the Option that number of Shares having a Fair Market Value equal to the amount required to be withheld. For this purpose, the Fair Market Value of the Shares to be withheld shall be determined on the date that the amount of tax to be withheld is to be determined (the "Tax

Date").

If Optionee is subject to Section 16 of the Exchange Act (an "Insider"), any surrender of previously owned Shares to satisfy tax withholding obligations arising upon exercise of this Option must comply with the applicable provisions of Rule 16b-3 promulgated under the Exchange Act ("Rule 16b-3").

All elections by Optionee to have Shares withheld to satisfy tax withholding obligations shall be made in writing in a form acceptable to the Administrator and shall be subject to the following restrictions:

(a) the election must be made on or prior to the applicable Tax Date;

(b) once made, the election shall be irrevocable as to the particular Shares of the Option as to which the election is made; and

(c) all elections shall be subject to the consent or disapproval of the Administrator.

12. Market Standoff Agreement. In connection with the initial public offering of the Company's securities and upon request of the Company or the underwriters managing such underwritten offering of the Company's securities, Optionee hereby agrees not to sell, make any short sale of, loan, grant any option for the purchase of, or otherwise dispose of any Shares (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed 180 days) from the effective date of such registration as may be requested by the Company or such managing

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underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time of the Company's initial public offering.

[Signature Page Follows]

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This Agreement may be executed in two or more counterparts, each of which shall be deemed an original and all of which together shall constitute one document.

STAMPS.COM INC.

2900 31st Street, Suite 150
Santa Monica, California 90405

By:

Name:

(print)

Title:

OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE OPTION HEREOF IS EARNED ONLY BY CONTINUING CONSULTANCY OR EMPLOYMENT AT THE WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR ACQUIRING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT NOTHING IN THIS AGREEMENT, NOR IN THE COMPANY'S STOCK PLAN WHICH IS INCORPORATED HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH RESPECT TO CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL IT INTERFERE IN ANY WAY WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE OPTIONEE'S EMPLOYMENT OR CONSULTANCY AT ANY TIME, WITH OR WITHOUT CAUSE.

Optionee acknowledges receipt of a copy of the Plan and represents that he or she is familiar with the terms and provisions thereof, and hereby accepts this Option subject to all of the terms and provisions thereof. Optionee has reviewed the Plan and this Option in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Option and fully understands all provisions of the Option. Optionee hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions arising under the Plan or this Option.

Dated:
       --------------------   ------------------------------
                              Optionee

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ADDENDUM
TO
STOCK OPTION AGREEMENT

The following provisions are hereby incorporated into, and are hereby made a part of, that certain Stock Option Agreement (the "Option Agreement") dated _________________, 199___ by and between Stamps.com Inc. (the "Corporation") and ________________________ ("Optionee") evidencing the stock option (the "Option") granted on that date to Optionee under the Corporation's 1998 Stock Plan, and such provisions shall be effective as of the Effective Date specified below. All capitalized terms in this Addendum, to the extent not otherwise defined herein, shall have the meanings assigned to them in the Option Agreement.

SPECIAL CHANGE IN CONTROL PROVISIONS

1. Subject to the limitations of Paragraph 2 below, the following provisions shall become applicable upon the occurrence of a Change in Control prior to the Optionee's cessation of Service:

(a) If the Optionee has completed at least one year of Service prior to the effective date of the Change in Control, then the Option, to the extent outstanding at the time of that Change in Control but not otherwise fully exercisable, shall automatically accelerate so that the Option shall, immediately prior to the specified effective date of such Change in Control, become exercisable for all of the shares at the time subject to the Option and may be exercised for any or all of those shares as fully-vested shares.

(b) If the Optionee has not completed at least one year of Service prior to the effective date of the Change in Control, then the Option, to the extent outstanding at the time of that Change in Control but not otherwise fully exercisable, shall automatically accelerate as to only a portion of the shares so that the Option shall, immediately prior to the specified effective date of such Change in Control, become exercisable on an accelerated basis for that number of shares for which the Option would have otherwise become exercisable, in accordance with the normal vesting schedule in effect for the option shares, during the period of Service to be rendered between the effective date of the Change in Control and the second anniversary of the grant date of the Option.

2. The Option shall not become exercisable in whole or in part on such an accelerated basis if and to the extent: (i) the Option is, in connection with the Change in Control, to be assumed by the successor corporation (or parent thereof) or otherwise continued in effect pursuant to the express terms of the Change in Control transaction or (ii) the Option is to be replaced with a cash incentive program of the successor corporation which preserves the spread existing at the time of the Change in Control on any shares for which the Option is not otherwiseat that time exercisable (the fair market value of those shares at the time of the Change

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of Control less the option exercise price payable for the shares) and provides for subsequent payout in accordance with the same exercise/vesting schedule applicable to those option shares.

3. Immediately following the Change in Control, the Option shall terminate and cease to be outstanding, except to the extent assumed by the successor corporation (or parent thereof) or otherwise continued in effect pursuant to the express terms of the Change in Control transaction.

4. To the extent the Option is assumed in connection with a Change in Control (or otherwise continued in effect), such Option shall be appropriately adjusted, immediately after such Change in Control, to apply to the number and class of securities which would have been issuable to the Optionee in consummation of such Change in Control, had the Option been exercised immediately prior to such Change in Control. Appropriate adjustments shall also be made to the exercise price payable per share under each outstanding option, provided the aggregate exercise price payable for such securities shall remain the same.

5. The Option, as assumed by the successor corporation (or its parent company) in the Change in Control or otherwise continued in effect, shall continue to become exercisable for the option shares in one or more installments over the Optionee's period of Service in accordance with the vesting schedule in effect for the Option at the time of the Change in Control. However, upon an Involuntary Termination of Optionee's Service within eighteen (18) months following a Change in Control in which the Option is assumed or otherwise continued in effect, the Option, to the extent outstanding at such time but not otherwise fully exercisable, shall automatically accelerate so that such Option shall immediately become exercisable for all of the shares at the time subject to the Option and may be exercised for any or all of those shares as fully- vested shares. The Option shall remain so exercisable until the Expiration Date or sooner termination of the option term. Any cash escrow maintained on Optionee's behalf pursuant to Paragraph 2 shall also vest immediately upon such an Involuntary Termination and shall be paid to Optionee as soon as practicable thereafter.

6. For purposes of this Addendum, the following definitions shall be in effect:

A Change in Control shall mean a change in ownership or control of the Corporation effected through any of the following transactions:

(a) a merger or consolidation in which securities possessing more than fifty percent (50%) of the total combined voting power of the Corporation's outstanding securities are transferred to a person or persons different from the persons holding those securities immediately prior to such merger or consolidation, or

(b) the sale, transfer or other disposition of all or substantially all of the assets of the Corporation in liquidation or dissolution of the Corporation, or

-9-

(c) the acquisition by any person or related group of persons (other than the Corporation or a person that directly or indirectly controls, is controlled by, or is under common control with, the Corporation) of beneficial ownership (within the meaning of Rule 13d-3 of the Securities Exchange Act of 1934)) of securities possessing more than fifty percent (50%) of the total combined voting power of the Corporation's outstanding securities pursuant to a tender or exchange offer made directly to the Corporation's stockholders.

An Involuntary Termination shall mean the termination of Optionee's service as an employee or consultant by reason of:

(a) Optionee's involuntary dismissal or discharge by the Corporation for reasons other than for Misconduct, or

(b) Optionee's voluntary resignation following (A) a change in Optionee's position with the Corporation (or any parent or subsidiary employing Optionee) which materially reduces Optionee's duties and responsibilities or the level of management to which he or she reports, (B) a reduction in Optionee's level of compensation (including base salary, fringe benefits and target bonuses under any corporate-performance based incentive programs) by more than fifteen percent (15%) or (C) a relocation of Optionee's place of employment by more than fifty (50) miles, provided and only if such change, reduction or relocation is effected by the Corporation without Optionee's consent.

Misconduct shall mean the commission of any act of fraud, embezzlement or dishonesty by Optionee, any unauthorized use or disclosure by Optionee of confidential information or trade secrets of the Corporation (or any parent or subsidiary), or any other intentional misconduct by Optionee adversely affecting the business or affairs of the Corporation (or any parent or subsidiary) in a material manner. The foregoing definition shall not be deemed to be inclusive of all the acts or omissions which the Corporation (or any parent or subsidiary) may consider as grounds for the dismissal or discharge of Optionee or any other person in the employ or service of the Corporation (or any parent or subsidiary).

Service shall mean the Optionee's performance of services for the Corporation (or any parent or majority-owned subsidiary) person in the capacity of an employee, subject to the control and direction of the employer entity as to both the work to be performed and the manner and method of performance, a non-employee member of the board of directors or a consultant or other independent advisor.

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7. The provisions of this Addendum shall also supersede any provisions to the contrary in the Option Agreement.

IN WITNESS WHEREOF, Stamps.com Inc. has caused this Addendum to be executed by its duly-authorized officer as of the Effective Date specified below.

STAMPS.COM INC.

By: ____________________________

Title: ____________________________

EFFECTIVE DATE: ____________________, 1999

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EXHIBIT A

STAMPS.COM INC.

1998 STOCK PLAN

EXERCISE NOTICE AND RESTRICTED STOCK PURCHASE AGREEMENT

This Agreement ("Agreement") is made as of ______________, by and between Stamps.com Inc., a Delaware corporation (the "Company"), and Optionee ("Purchaser"). To the extent any capitalized terms used in this Agreement are not defined, they shall have the meaning ascribed to them in the 1998 Stock Plan.

1. Exercise of Option. Subject to the terms and conditions hereof, Purchaser hereby elects to exercise his or her option to purchase __________ shares of the Common Stock (the "Shares") of the Company under and pursuant to the Company's 1998 Stock Plan (the "Plan") and the Stock Option Agreement dated

______________, (the "Option Agreement"). The purchase price for the Shares shall be $ExercisePrice per Share for a total purchase price of $_______________. The term "Shares" refers to the purchased Shares and all securities received in replacement of the Shares or as stock dividends or splits, all securities received in replacement of the Shares in a recapitalization, merger, reorganization, exchange or the like, and all new, substituted or additional securities or other properties to which Purchaser is entitled by reason of Purchaser's ownership of the Shares.

2. Time and Place of Exercise. The purchase and sale of the Shares under this Agreement shall occur at the principal office of the Company simultaneously with the execution and delivery of this Agreement in accordance with the provisions of Section 2(b) of the Option Agreement. On such date, the Company will deliver to Purchaser a certificate representing the Shares to be purchased by Purchaser (which shall be issued in Purchaser's name) against payment of the purchase price therefor by Purchaser by (a) check made payable to the Company,
(b) cancellation of indebtedness of the Company to Purchaser, (c) delivery of shares of the Common Stock of the Company in accordance with Section 3 of the Option Agreement, (d) subject to Section 153 of the Delaware General Corporation Law, delivery of a promissory note in the form attached as Exhibit B to the Option Agreement (or in any form acceptable to the Company), or (e) a combination of the foregoing. If Purchaser delivers a promissory note as partial or full payment of the purchase price, Purchaser will also deliver a Pledge and Security Agreement in the form attached as Exhibit C to the Option Agreement (or in any form acceptable to the Company).

3. Limitations on Transfer. In addition to any other limitation on transfer created by applicable securities laws, Purchaser shall not assign, encumber or dispose of any interest in the Shares except in compliance with the provisions below and applicable securities laws.

(a) Right of First Refusal. Before any Shares held by Purchaser or any transferee of Purchaser (either being sometimes referred to herein as the "Holder") may be sold or otherwise transferred (including transfer by gift or operation of law), the Company or its

assignee(s) shall have a right of first refusal to purchase the Shares on the terms and conditions set forth in this Section 3(a) (the "Right of First Refusal").

(i) Notice of Proposed Transfer. The Holder of the Shares shall deliver to the Company a written notice (the "Notice") stating: (i) the Holder's bona fide intention to sell or otherwise transfer such Shares; (ii) the name of each proposed purchaser or other transferee ("Proposed Transferee");
(iii) the number of Shares to be transferred to each Proposed Transferee; and
(iv) the terms and conditions of each proposed sale or transfer. The Holder shall offer the Shares at the same price (the "Offered Price") and upon the same terms (or terms as similar as reasonably possible) to the Company or its assignee(s).

(ii) Exercise of Right of First Refusal. At any time within 30 days after receipt of the Notice, the Company and/or its assignee(s) may, by giving written notice to the Holder, elect to purchase all, but not less than all, of the Shares proposed to be transferred to any one or more of the Proposed Transferees, at the purchase price determined in accordance with subsection
(iii) below.

(iii) Purchase Price. The purchase price ("Purchase Price") for the Shares purchased by the Company or its assignee(s) under this Section 3(a) shall be the Offered Price. If the Offered Price includes consideration other than cash, the cash equivalent value of the non-cash consideration shall be determined by the Board of Directors of the Company in good faith.

(iv) Payment. Payment of the Purchase Price shall be made, at the option of the Company or its assignee(s), in cash (by check), by cancellation of all or a portion of any outstanding indebtedness of the Holder to the Company (or, in the case of repurchase by an assignee, to the assignee), or by any combination thereof within 30 days after receipt of the Notice or in the manner and at the times set forth in the Notice.

(v) Holder's Right to Transfer. If all of the Shares proposed in the Notice to be transferred to a given Proposed Transferee are not purchased by the Company and/or its assignee(s) as provided in this Section 3(a), then the Holder may sell or otherwise transfer such Shares to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other transfer is consummated within 60 days after the date of the Notice and provided further that any such sale or other transfer is effected in accordance with any applicable securities laws and the Proposed Transferee agrees in writing that the provisions of this Section 3 shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not transferred to the Proposed Transferee within such period, or if the Holder proposes to change the price or other terms to make them more favorable to the Proposed Transferee, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal before any Shares held by the Holder may be sold or otherwise transferred.

(vi) Exception for Certain Family Transfers. Anything to the contrary contained in this Section 3(a) notwithstanding, the transfer of any or all of the Shares during Purchaser's lifetime or on Purchaser's death by will or intestacy to Purchaser's Immediate

-2-

Family (as defined below) or a trust for the benefit of Purchaser's Immediate Family shall be exempt from the provisions of this Section 3(a). "Immediate Family" as used herein shall mean spouse, lineal descendant or antecedent, father, mother, brother or sister. In such case, the transferee or other recipient shall receive and hold the Shares so transferred subject to the provisions of this Section, and there shall be no further transfer of such Shares except in accordance with the terms of this Section 3.

(b) Involuntary Transfer.

(i) Company's Right to Purchase upon Involuntary Transfer. In the event, at any time after the date of this Agreement, of any transfer by operation of law or other involuntary transfer (including divorce or death, but excluding, in the event of death, a transfer to Immediate Family as set forth in
Section 3(a)(vi) above) of all or a portion of the Shares by the record holder thereof, the Company shall have the right to purchase all of the Shares transferred at the greater of the purchase price paid by Purchaser pursuant to this Agreement or the Fair Market Value of the Shares on the date of transfer. Upon such a transfer, the person acquiring the Shares shall promptly notify the Secretary of the Company of such transfer. The right to purchase such Shares shall be provided to the Company for a period of 30 days following receipt by the Company of written notice by the person acquiring the Shares.

(ii) Price for Involuntary Transfer. With respect to any stock to be transferred pursuant to Section 3(b)(i), the price per Share shall be a price set by the Board of Directors of the Company that will reflect the current value of the stock in terms of present earnings and future prospects of the Company. The Company shall notify Purchaser or his or her executor of the price so determined within 30 days after receipt by it of written notice of the transfer or proposed transfer of Shares. However, if the Purchaser does not agree with the valuation as determined by the Board of Directors of the Company, the Purchaser shall be entitled to have the valuation determined by an independent appraiser to be mutually agreed upon by the Company and the Purchaser and whose fees shall be borne equally by the Company and the Purchaser.

(c) Assignment. The right of the Company to purchase any part of the Shares may be assigned in whole or in part to any shareholder or shareholders of the Company or other persons or organizations; provided, however, that an assignee, other than a corporation that is the Parent or a 100% owned Subsidiary of the Company, must pay the Company, upon assignment of such right, cash equal to the difference between the original purchase price and Fair Market Value, if the original purchase price is less than the Fair Market Value of the Shares subject to the assignment.

(e) Restrictions Binding on Transferees. All transferees of Shares or any interest therein will receive and hold such Shares or interest subject to the provisions of this Agreement. Any sale or transfer of the Shares shall be void unless the provisions of this Agreement are satisfied.

(f) Termination of Rights. The Right of First Refusal and the Company's right to repurchase the Shares in the event of an involuntary transfer pursuant to Section 3(b)

-3-

above shall terminate upon the first sale of Common Stock of the Company to the general public pursuant to a registration statement filed with and declared effective by the Securities and Exchange Commission under the Securities Act or 1933, as amended (the "Securities Act"). Upon termination of the Right of First Refusal, a new certificate or certificates representing the Shares not repurchased shall be issued, on request, without the legend referred to in
Section 5(a)(ii) below and delivered to Purchaser.

4. Investment and Taxation Representations. In connection with the purchase of the Shares, Purchaser represents to the Company the following:

(a) Purchaser is aware of the Company's business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares. Purchaser is purchasing the Shares for investment for his or her own account only and not with a view to, or for resale in connection with, any "distribution" thereof within the meaning of the Securities Act.

(b) Purchaser understands that the Shares have not been registered under the Securities Act by reason of a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of Purchaser's investment intent as expressed herein.

(c) Purchaser understands that the Shares are "restricted securities" under applicable U.S. federal and state securities laws and that, pursuant to these laws, Purchaser must hold the Shares indefinitely unless they are registered with the Securities and Exchange Commission and qualified by state authorities, or an exemption from such registration and qualification requirements is available. Purchaser acknowledges that the Company has no obligation to register or qualify the Shares for resale. Purchaser further acknowledges that if an exemption from registration or qualification is available, it may be conditioned on various requirements including, but not limited to, the time and manner of sale, the holding period for the Shares, and requirements relating to the Company which are outside of the Purchaser's control, and which the Company is under no obligation and may not be able to satisfy.

(d) Purchaser understands that Purchaser may suffer adverse tax consequences as a result of Purchaser's purchase or disposition of the Shares. Purchaser represents that Purchaser has consulted any tax consultants Purchaser deems advisable in connection with the purchase or disposition of the Shares and that Purchaser is not relying on the Company for any tax advice.

5. Restrictive Legends and Stop-Transfer Orders.

(a) Legends. The certificate or certificates representing the Shares shall bear the following legends (as well as any legends required by applicable state and federal corporate and securities laws):

(i) THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AND HAVE BEEN

-4-

ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR DISTRIBUTION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL IN A FORM SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933.

(ii) THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

(b) Stop-Transfer Notices. Purchaser agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate "stop transfer" instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records.

(c) Refusal to Transfer. The Company shall not be required (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any of the provisions of this Agreement or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred.

6. No Employment Rights. Nothing in this Agreement shall affect in any manner whatsoever the right or power of the Company, or a Parent or Subsidiary of the Company, to terminate Purchaser's employment or consulting relationship, for any reason, with or without cause.

7. Market Stand-off Agreement. In connection with the initial public offering of the Company's securities and upon request of the Company or the underwriters managing such underwritten offering of the Company's securities, Purchaser agrees not to sell, make any short sale of, loan, grant any option for the purchase of, or otherwise dispose of any Shares (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed 180 days) from the effective date of such registration as may be requested by the Company or such managing underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time of the Company's initial public offering.

-5-

8. Miscellaneous.

(a) Governing Law. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law.

(b) Entire Agreement; Enforcement of Rights. This Agreement sets forth the entire agreement and understanding of the parties relating to the subject matter herein and merges all prior discussions between them. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing signed by the parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party.

(c) Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be excluded from this Agreement, (ii) the balance of the Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of the Agreement shall be enforceable in accordance with its terms.

(d) Construction. This Agreement is the result of negotiations between and has been reviewed by each of the parties hereto and their respective counsel, if any; accordingly, this Agreement shall be deemed to be the product of all of the parties hereto, and no ambiguity shall be construed in favor of or against any one of the parties hereto.

(e) Notices. Any notice required or permitted by this Agreement shall be in writing and shall be deemed sufficient when delivered personally or sent by telegram or fax or 48 hours after being deposited in the U.S. mail, as certified or registered mail, with postage prepaid, and addressed to the party to be notified at such party's address as set forth below or as subsequently modified by written notice.

(f) Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument.

(g) Successors and Assigns. The rights and benefits of this Agreement shall inure to the benefit of, and be enforceable by the Company's successors and assigns. The rights and obligations of Purchaser under this Agreement may only be assigned with the prior written consent of the Company.

(h) California Corporate Securities Law. THE SALE OF THE SECURITIES WHICH ARE THE SUBJECT OF THIS AGREEMENT HAS NOT BEEN QUALIFIED WITH THE COMMISSIONER OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF THE SECURITIES OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION THEREFOR PRIOR TO THE QUALIFICATION IS UNLAWFUL,

-6-

UNLESS THE SALE OF SECURITIES IS EXEMPT FROM QUALIFICATION BY SECTION 25100, 25102 OR 25105 OF THE CALIFORNIA CORPORATIONS CODE. THE RIGHTS OF ALL PARTIES TO THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON THE QUALIFICATION BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT.

[Signature Page Follows]

-7-

The parties have executed this Agreement as of the date first set forth above.

COMPANY:

STAMPS.COM INC.

By:

Name:

(print)

Title:

PURCHASER:

Optionee


(Signature)


(Print Name)

Address:

I, , spouse of Optionee, have read and hereby approve the foregoing Agreement. In consideration of the Company's granting my spouse the right to purchase the Shares as set forth in the Agreement, I hereby agree to be bound irrevocably by the Agreement and further agree that any community property or similar interest that I may have in the Shares shall hereby be similarly bound by the Agreement. I hereby appoint my spouse as my attorney-in-fact with respect to any amendment or exercise of any rights under the Agreement.


Spouse of Optionee

-8-

EXHIBIT B

PROMISSORY NOTE

$                                                    __________, California
 ----------
                                                     _______________, 19__

For value received, the undersigned promises to pay Stamps.com Inc., a Delaware corporation (the "Company"), at its principal office the principal sum of $ with interest from the date hereof at a rate of % per annum, compounded semiannually, on the unpaid balance of such principal sum. Such principal and interest shall be due and payable on .

If the undersigned's employment or consulting relationship with the Company is terminated prior to payment in full of this Note, this Note shall be immediately due and payable.

Principal and interest are payable in lawful money of the United States of America. AMOUNTS DUE UNDER THIS NOTE MAY BE PREPAID AT ANY TIME WITHOUT INTEREST OR PENALTY.

Should suit be commenced to collect any sums due under this Note, such sum as the Court may deem reasonable shall be added hereto as attorneys' fees. The makers and endorsers have severally waived presentment for payment, protest notice of protest and notice of nonpayment of this Note.

This Note, which is full recourse, is secured by a pledge of certain shares of Common Stock of the Company and is subject to the terms of a Pledge and Security Agreement between the undersigned and the Company of even date herewith.


Optionee

EXHIBIT C

PLEDGE AND SECURITY AGREEMENT

This Pledge and Security Agreement (the "Agreement") is entered into this day of by and between Stamps.com Inc., a Delaware corporation (the "Company") and Optionee ("Purchaser").

RECITALS

In connection with Purchaser's exercise of an option to purchase certain shares of the Company's Common Stock (the "Shares") pursuant to an Option Agreement dated between Purchaser and the Company, Purchaser is delivering a promissory note of even date herewith (the "Note") in full or

partial payment of the exercise price for the Shares. The company requires that the Note be secured by a pledge of the Shares or the terms set forth below.

AGREEMENT

In consideration of the Company's acceptance of the Note as full or partial payment of the exercise price of the Shares, and for other good and valuable consideration, the receipt of which is hereby acknowledged, the parties hereto agree as follows:

1. The Note shall become payable in full upon the voluntary or involuntary termination or cessation of employment of Purchaser with the Company, for any reason, with or without cause (including death or disability).

2. Purchaser shall deliver to the Secretary of the Company, or his or her designee (hereinafter referred to as the "Pledge Holder"), all certificates representing the Shares, together with an Assignment Separate from Certificate in the form attached to this Agreement as Attachment A executed by Purchaser and by Purchaser's spouse (if required for transfer), in blank, for use in transferring all or a portion of the Shares to the Company if, as and when required pursuant to this Agreement. In addition, if Purchaser is married, Purchaser's spouse shall execute the signature page attached to this Agreement.

3. As security for the payment of the Note and any renewal, extension or modification of the Note, Purchaser hereby grants to the Company a security interest in and pledges with and delivers to the Company Purchaser's Shares (sometimes referred to herein as the "Collateral").

4. In the event that Purchaser prepays all or a portion of the Note, in accordance with the provisions thereof, Purchaser intends, unless written notice to the contrary is delivered to the Pledge Holder, that the Shares represented by the portion of the Note so repaid, including annual interest thereon, shall continue to be so held by the Pledge Holder, to serve as independent collateral for the outstanding portion of the Note for the purpose of commencing the holding period set forth in Rule 144(d) promulgated under the Securities Act of 1933, as amended (the "Securities Act").

5. In the event of any foreclosure of the security interest created by this Agreement, the Company may sell the Shares at a private sale or may repurchase the Shares itself. The parties agree that, prior to the establishment of a public market for the Shares of the Company, the securities laws affecting sale of the Shares make a public sale of the Shares commercially unreasonable. The parties further agree that the repurchasing of such Shares by the Company, or by any person to whom the Company may have assigned its rights under this Agreement, is commercially reasonable if made at a price determined by the Board of Directors in its discretion, fairly exercised, representing what would be the fair market value of the Shares reduced by any limitation on transferability, whether due to the size of the block of shares or the restrictions of applicable securities laws.

6. In the event of default in payment when due of any indebtedness under the Note, the Company may elect then, or at any time thereafter, to exercise all rights available to a secured party under the California Commercial Code including the right to sell the Collateral at a private or public sale or repurchase the Shares as provided above. The proceeds of any sale shall be applied in the following order:

(a) To the extent necessary, proceeds shall be used to pay all reasonable expenses of the Company in enforcing this Agreement and the Note, including, without limitation, reasonable attorney's fees and legal expenses incurred by the Company.

(b) To the extent necessary, proceeds shall be used to satisfy any remaining indebtedness under Purchaser's Note.

(c) Any remaining proceeds shall be delivered to Purchaser.

7. Upon full payment by Purchaser of all amounts due under the Note, Pledge Holder shall deliver to Purchaser all Shares in Pledge Holder's possession belonging to Purchaser, and Pledge Holder shall thereupon be discharged of all further obligations under this Agreement; provided, however, that Pledge Holder shall nevertheless retain the Shares as escrow agent if at the time of full payment by Purchaser said Shares are still subject to a Repurchase Option in favor of the Company.

-2-

The parties have executed this Pledge and Security Agreement as of the date first set forth above.

COMPANY:

STAMPS.COM INC.

By:

Name:

(print)

Title:

Address:

PURCHASER:

Optionee


(Signature)


(Print Name)

Address:

-3-

ATTACHMENT A

ASSIGNMENT SEPARATE FROM CERTIFICATE

FOR VALUE RECEIVED and pursuant to that certain Pledge and Security Agreement between the undersigned ("Purchaser") and Stamps.com Inc. (the "Company") dated _______________, ____ (the "Agreement"), Purchaser hereby sells, assigns and transfers unto the Company _________________________________ (________) shares of the Common Stock of the Company, standing in Purchaser's name on the books of the Company and represented by Certificate No. ____, and does hereby irrevocably constitute and appoint ________________________________________________ to transfer said stock on the books of the Company with full power of substitution in the premises. THIS ASSIGNMENT MAY ONLY BE USED AS AUTHORIZED BY THE AGREEMENT.

Dated: ____________

Signature:


Optionee


Spouse of Optionee (if applicable)

Instruction: Please do not fill in any blanks other than the signature line. The purpose of this assignment is to perfect the security interest of the Company pursuant to the Agreement.


RECEIPT

The undersigned hereby acknowledges receipt of Certificate No. _____ for __________ shares of Common Stock of Stamps.com Inc..

Dated: _______________


Optionee

RECEIPT AND CONSENT

The undersigned hereby acknowledges receipt of a photocopy Certificate No. _____ purchaser for __________ shares of Common Stock of Stamps.com Inc. (the "Company").

The undersigned further acknowledges that the Secretary of the Company, or his or her designee, is acting as Pledge Holder pursuant to the Pledge and Security Agreement Purchaser has previously entered into with the Company. As Pledge Holder, the Secretary of the Company, or his or her designee, holds the original of the aforementioned certificate issued in the undersigned's name.

Dated: _______________


Optionee


RECEIPT

Stamps.com Inc. (the "Company") hereby acknowledges receipt of (check as applicable):

_____  A check in the amount of $__________

_____  The cancellation of indebtedness in the amount of $__________

_____  Certificate No. ____ representing ______ shares of the Company's

       Common Stock with a fair market value of $__________

_____  A promissory note in the amount of $__________.

given by Optionee as consideration for Certificate No. ______ for ___________ shares of Common Stock of the Company.

Dated: ______________

STAMPS.COM INC.

By:

Name:

(print)

Title:



EXHIBIT 10.12

CONFIDENTIAL TREATMENT HAS BEEN REQUESTED FOR CERTAIN REDACTED PROVISIONS OF THIS AGREEMENT. THE REDACTED PROVISIONS ARE IDENTIFIED BY THREE ASTERISKS ENCLOSED BY BRACKETS AND UNDERLINED. THE CONFIDENTIAL PORTION HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.


AOL ADVERTISING INSERTION ORDER

by and between

AMERICA ONLINE, INC.

and

STAMPS.COM INC.

Dated

December 16, 1998




AOL ADVERTISING INSERTION ORDER [LOGO OF AMERICA ONLINE]

Contract #:
AOL Salesperson:
Sales Coordinator: Credit Approval Received Date:

-----------------------------------------------------------------------------------------------
                                         Advertiser                 Advertising Agency
-----------------------------------------------------------------------------------------------
       Contact Person                    Doug Walner
-----------------------------------------------------------------------------------------------
        Company Name                   Stamps.com, Inc.
-----------------------------------------------------------------------------------------------
      Address - Line 1             2900 31st St., Suite 150
-----------------------------------------------------------------------------------------------
      Address - Line 2              Santa Monica, CA 90405
-----------------------------------------------------------------------------------------------
          Phone #                        310-450-1444
-----------------------------------------------------------------------------------------------
           Fax #
-----------------------------------------------------------------------------------------------
           Email                      Dwalner@stamps.com
-----------------------------------------------------------------------------------------------
          SIC Code
-----------------------------------------------------------------------------------------------
  Advertiser IAB Category
-----------------------------------------------------------------------------------------------

-----------------------------------------------------------------------------------------------
                                     Billing Information
-----------------------------------------------------------------------------------------------
Send Invoices to (choose one):            Advertiser                    [_] Agency
-----------------------------------------------------------------------------------------------
Advertiser or Agency Billing            Same as above
       Contact Person
-----------------------------------------------------------------------------------------------
        Company Name
-----------------------------------------------------------------------------------------------
  Billing Address - Line 1
-----------------------------------------------------------------------------------------------
  Billing Address - Line 2
-----------------------------------------------------------------------------------------------
       Billing Phone #
-----------------------------------------------------------------------------------------------
        Billing Fax #
-----------------------------------------------------------------------------------------------
    Billing Email Address
-----------------------------------------------------------------------------------------------
    P.O. #, if applicable
-----------------------------------------------------------------------------------------------

1. Guaranteed Payments. Advertiser shall make the following payments to AOL:

a. [***];

b. [***];

c. [***]; and

d. [***]

2. Additional Payments. See Sections 3 and 8 of Exhibit A, and Section 9 of Exhibit E attached hereto.

3. Late Payments; Wired Payments. All amounts owed hereunder not paid when due and payable will bear interest from the date such amounts are due and payable at the prime rate in effect at such time. All payments required hereunder will be paid in immediately available, non-refundable U.S. funds wired to the "America Online" account, Account Number 323070752 at The Chase Manhattan Bank, 1 Chase Manhattan Plaza, New York, NY 10081 (ABA:
021000021). In the event of nonpayment on any of the dates specified above, Advertiser shall have an additional five (5) business days within which to make such payment and if Advertiser does not make the required payment in such additional five (5) business days, AOL reserves the right to immediately terminate this Insertion Order Agreement with written notice to Advertiser.


--------------------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.


Inventory Type (choose one): [_] AOL Service only
[_] AOL Affiliate only (e.g.AOL.com) [_] AOL Service & AOL Affiliate

1

---------------------------------------------------------------------------------------------------------------------------------
                                                          AOL Service
---------------------------------------------------------------------------------------------------------------------------------
                                                           Inventory
---------------------------------------------------------------------------------------------------------------------------------
                                                 Display
  AOL Inventory/Demographic*        Display       Stop                          # of Ad Slots     Total Gross       Total
          Purchased                Start Date     Date          Ad Type           Purchased          Price       Impressions
---------------------------------------------------------------------------------------------------------------------------------
      PHASE I PROMOTIONS
---------------------------------------------------------------------------------------------------------------------------------
Run of E-mail: Zip Code Area 1        [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Run of E-mail: Zip Code Area 2        [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Run of E-mail: Zip Code Area 3        [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Run of Service: Zip Code Area 1       [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Run of Service: Zip Code Area 2       [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Run of Service: Zip Code Area 3       [***]       [***]      Banner Rotation                         [***]          [***]
                                       ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
Computing Download Software: Zip      [***]       [***]      Banner Rotation                         [***]          [***]
         Code Targeted                 ---         ---                                                ---            ---
---------------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------
      PHASE II PROMOTIONS             [***]       [***]
 See Exhibit B attached hereto         ---         ---
---------------------------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------------------------
* Attach completed AOL Demographic                                                 Phase I           [***]          [***]
        Profile Worksheet                                                      Promotions Total:      ---            ---
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                                                                Art
---------------------------------------------------------------------------------------------------------------------------------
            All necessary artwork and active URL's must be provided by advertiser 3 business days prior to start date.

                                             Artwork required from Advertiser/Agency:
                                             ----------------------------------------
[_] 234x60  IAB Standard /10k Max           [_] 145x30 Old Standard /10k Max              [_] 120x60 Shopping/10k Max
[_] 175x45 Chat/Mail in-box/10k Max         [_] 197x40 PF Area/10k Max                    [_] Special
                                                                                                     ------------------
                                               *  Static banners only, no animation*

Linking URL: The HTTP/URL address to be connected to the Advertisement shall be:
http://www.stamps.com, or any other HTTP/URL agreed upon by Advertiser and AOL (the "Affiliated Advertiser Site"). Advertiser shall be responsible for any hosting or communication costs associated with the Affiliated Advertiser Site.

Please send artwork and URL to (choose one):

[_] AOLARTWEST@aol.com [_] AOLARTEAST@aol.com

AOL reserves the right to immediately cancel any advertising flight in the event of a material change to the nature or content of the site linked to the Advertisement.

----------------------------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.

2

------------------------------------------------------------------------------------------------------------------------------------
                                                   AOL Affiliate (e.g., AOL.com)
------------------------------------------------------------------------------------------------------------------------------------
                                                             Inventory
------------------------------------------------------------------------------------------------------------------------------------
        AOL Affiliate
    Inventory/Demographic*     Display Start   Display Stop                     # of Ad Slots                             Total
          Purchased                Date            Date           Ad Type         Purchased      Total Gross Price     Impressions
------------------------------------------------------------------------------------------------------------------------------------
     PHASE I PROMOTIONS
------------------------------------------------------------------------------------------------------------------------------------
       Digital City -
      Market Selection             [***]           [***]      Banner Rotation                          [***]              [***]
                                    ---             ---                                                 ---                ---
------------------------------------------------------------------------------------------------------------------------------------
     PHASE II PROMOTIONS           [***]           [***]
See Exhibit B attached hereto       ---             ---
------------------------------------------------------------------------------------------------------------------------------------
   * See attached package description for                                     ------------------------------------------------------
     any AOL.com package purchases                                                PHASE I              [***]              [***]
                                                                                PROMOTIONS              ---                ---
                                                                                  TOTAL :
------------------------------------------------------------------------------------------------------------------------------------

------------------------------------------------------------------------------------------------------------------------------------
                                                                Art
------------------------------------------------------------------------------------------------------------------------------------
                                    All necessary artwork and active URL's must be provided by
                                          advertiser 3 business days prior to start date.

                                             Artwork required from Advertiser/Agency:
                                             ----------------------------------------

[_] 468x60 NF Reviews, Search Terms, My News & Hometown/10k Max/animation OK
[_] 100x70 AOL.com Home Page/3k Max/No animation                     [_] 234x60 NF Kids Only & Hometown/5k Max/animation OK
[_] 120x60 NF Home Page/2k Max/No animation                          [_] 120x60 Instant Messenger/7.5k Max/animation OK
[_] 120x60 Shopping/4k Max/No animation

Linking URL: The HTTP/URL address to be connected to the Advertisement shall be the same address as that of the Advertiser Site.

Please send artwork and URL to (choose one):

[_] AOLWEBWEST@aol.com [_] AOLWEBEAST@aol.com

AOL reserves the right to immediately cancel any advertising flight in the event of a material change to the nature or content of the site linked to the Advertisement.

--------------------------------------------------------------------------------
                         Advertising Purchase Summary
--------------------------------------------------------------------------------
                                Total Price       Total Impessions     CPM
--------------------------------------------------------------------------------
     AOL Networks                  [***]                [***]
                                    ---                  ---
--------------------------------------------------------------------------------
    AOL Affiliate                  [***]                [***]
                                    ---                  ---
--------------------------------------------------------------------------------
 Total Purchase Price              [***]                [***]         [***]
                                    ---                  ---           ---
--------------------------------------------------------------------------------
(Less Agency Discount)              N/A                  N/A
--------------------------------------------------------------------------------

                           -----------------------------------------------------
                             Net Purchase Price   Total Impressions
                           -----------------------------------------------------
                                   [***]                [***]
                                    ---                  ---
                           -----------------------------------------------------

The products and/or services to be offered or promoted by Advertiser in the Advertisements are as follows: online postal services (i.e., services associated with the online sale of postage stamps and ancillary products and services related thereto) (the "Advertiser Products").

-------------------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.

3

4. Impressions Commitment. Any guarantees are to impressions (as measured by AOL in accordance with its standard methodologies and protocols), not "click-throughs." In the event there is (or will be in AOL's reasonable judgment) a shortfall in impressions as of the end of a display period (a "Shortfall"), such Shortfall shall not be considered a breach of the Agreement by AOL; instead, AOL will provide Advertiser, as its sole remedy, with "makegood" impressions through advertisement placements on the AOL Service. In connection with the foregoing, AOL shall use reasonable efforts to ensure that any makegood impressions shall be provided to Advertiser through promotions that are comparable in nature to the appropriate type of promotions through which the impressions should have been delivered (e.g., if there is a Shortfall that should have been delivered through Level A Promotions, AOL shall use reasonable efforts to make up such impressions with other Level A Promotions). In the event that AOL is unable to provide makegood impressions through the appropriate comparable promotions, AOL shall provide such impressions through other types of promotions as follows:
[***] AOL reserves the right to alter Advertiser flight dates to accommodate

trafficking needs or other operational needs. In such cases, AOL will make available to Advertiser reasonably equivalent flight(s).

5. Navigation. Advertiser shall provide continuous navigational ability for AOL users to return to an agreed-upon point on the AOL Service (for which AOL shall supply the proper address) from the Affiliated Advertiser Site (e.g., the point on the AOL Service from which the Affiliated Advertiser Site is linked).

6. Term. Unless otherwise terminated as provided herein, the term hereof shall

begin on the first Display Start Date and shall expire on the last Display Stop Date.

AUTHORIZED SIGNATURES

In order to bind the parties to this Insertion Order Agreement, their duly authorized representatives have signed their names below on the dates indicated. This Agreement (including Exhibits A, B, C, D and E attached hereto and incorporated by reference) shall be binding on both parties when signed on behalf of each party and delivered to the other party (which delivery may be accomplished by facsimile transmission of the signature pages hereto).

AOL                                     ADVERTISER

By: /S/ David M. Colburn                By: /S/ John M. Payne
    -----------------------------           ------------------------------
(signature)                             (signature)

Print Name: David M. Colburn            Print Name: John M. Payne
            ---------------------                   ----------------------

Title: SVP Business Affairs             Title: Pres/CEO
       --------------------------              ---------------------------
(Print or Type)                         (Print or Type)

Date: 12/16/98                          Date: 12/15/98

-------------------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.

4

EXHIBIT A

1. Authorization to Conduct Business. Advertiser hereby represents and warrants that it has obtained all necessary permits, licenses or other authorizations from the United States Postal Service (the "USPS") which permits Advertiser to conduct a beta test of the Advertiser Products by advertising and offering for sale the Advertiser Products on the AOL Service during the Phase I Promotions.

2. Phased Roll-Out of Promotions. The Advertisements provided hereunder shall be provided by AOL in accordance with the Insertion Order provided above, subject to the following:

a. At least three (3) days prior to the Phase I Promotions Display Stop Date, Advertiser shall provide AOL with a written notice which shall contain the following:

i. a representation by Advertiser that Advertiser has obtained all
[***] and

ii. an election by Advertiser to receive the Phase II Promotions. Provided, however, that if prior to the end of the Phase I Promotions Advertiser [***], Advertiser shall provide AOL with a

written notice (provided at least two (2) days prior to the date on which Advertiser wishes to begin receiving the Phase II Promotions) (the "Acceleration Notice"), containing (A) the representation required pursuant to Section 2(a)(i) of this Exhibit A, and (B) an election by Advertiser to receive the Phase II Promotions. In such event, the parties hereto shall create a new insertion order which will indicate the new Display Start Date of the Phase II Promotions, which insertion order shall be attached hereto as an Exhibit. Notwithstanding the foregoing, (1) upon receipt of an Acceleration Notice, AOL shall only be obligated to place Advertisements for which Advertiser has already provided the necessary creative art work and related materials to AOL, and which requires less than two (2) days of advance notice to place on the AOL Service; to the extent that any Advertisement required to be placed during the Phase II Promotions shall require more than two (2) days of advance notice to be placed on the AOL Service, AOL shall provide such Advertisements within thirty (30) days after receipt of the Acceleration Notice; (2) AOL shall not be obligated to provide the Phase II Promotions unless and until Advertiser makes the representation required pursuant to Section 2(a)(i) of this Exhibit A; and (3) if Advertiser does not [***], either party

shall have the right to immediately terminate this Insertion Order Agreement without any further obligation or liability of any kind (other than any liability incurred by either party prior to such date) to the other party on account of such termination. In the event of such termination, Advertiser shall have no further payment obligations under this Insertion Order Agreement other than payment obligations due and payable at the time of termination.

3. Additional Promotions.

a. Phase I. During the Phase I Promotions, from time to time, Advertiser shall have the right to purchase up to [***] from AOL subject to the

following restrictions:

i. Advertiser shall purchase such additional impressions [***]

pursuant to an AOL Insertion Order Agreement entered into by Advertiser and AOL (an "Insertion Order") which will be attached hereto as an exhibit,

ii. Advertiser shall submit the relevant Insertion Order to AOL at least five (5) days prior to the date on which Advertiser wishes to begin receiving impressions; and

iii. AOL's obligation to deliver any additional impressions pursuant to this Section 3 shall be subject to the availability of advertising inventory on the AOL Service from which AOL can deliver such additional impressions.

b. Phase II. During the Phase II Promotions, from time to time, Advertiser shall have the right to purchase up to [***] from AOL

subject to the restrictions contained in Section 3(a)(i), (ii) and
(iii). Notwithstanding the foregoing, in the event that the transaction between AOL and Advertiser which is contemplated under
Section 9 hereof is not consummated, or if Advertiser expends less than the amounts earmarked for such transactions, Advertiser will use the funds earmarked for such transaction (or any remaining portion thereof) to purchase up to [***] from AOL subject to the provisions of

Section 3(a)(i), (ii) and (iii).

4. Product Parity. Advertiser will ensure that the prices, terms and conditions for the Advertiser Products in the Affiliated Advertiser Site are no less favorable than the prices, terms and conditions on which the Advertiser Products or substantially similar products are offered by or on behalf of Advertiser through any other distribution channels.

---------------
[***]  Confidential treatment has been requested for the bracketed portions.
       The confidential redacted portion has been omitted and filed separately
       with the Securities and Exchange Commission.

5

5. Special Offers/Member Benefits. Advertiser will generally promote through the Affiliated Advertiser Site any special or promotional offers made available by or on behalf of Advertiser through any other distribution channels directed primarily at a consumer audience (i.e., non-corporate customers). Advertiser shall not be required to comply with the foregoing provision if compliance therewith would result in a breach by Advertiser of any contractual arrangements with third parties, and it is understood by the parties that the foregoing shall not prevent Advertiser from providing one time special offers which may not be appropriate for AOL users. In addition, Advertiser shall promote (a) at least [***] to AOL users (the

"AOL Special Offers") and (b) at least [***] in connection with the Stamp

Days Promotions described in Section 10 hereof (the "Stamp Days Promotion Special Offer"). AOL Special Offers made available by Advertiser shall provide a substantial benefit to AOL users as reasonably determined by Advertiser, either by [***] Advertiser shall have the right to promote

special or promotional offers to AOL users which in addition to the promotion of Advertiser, may promote other third parties; provided that,
(i) [***] (ii) [***] and (iii) such special or promotional offers shall

[***] Advertiser will provide AOL with reasonable prior notice of the AOL

Special Offers and the Stamp Days Promotion Special Offer so that AOL can market the availability of such special offers in the manner AOL deems appropriate in its editorial discretion.

6. Advertiser Promotion of AOL. [***] within Advertiser's web sites on the World Wide Web portion of the Internet that are not co-branded with a third party (each an "Advertiser Web Site"), at AOL's option, Advertiser shall include one of the following (each an "AOL Promo"): (i) [***] to promote

such AOL products or services as AOL may designate (for example, the America Online brand service, the CompuServe brand service, the AOL.com site, any of the Digital City services or the AOL Instant Messenger service); or (ii) [***] through which users can obtain promotional

information about AOL products or services designated by AOL and, at AOL's option, download or order the then-current version of client software for such AOL products or services. AOL will provide the creative content to be used in the AOL Promo (including designation of links from such content to other content pages). To the extent Advertiser notifies AOL of reasonable complaints or concerns regarding the AOL Promo or any other content or materials linked thereto or associated therewith ("Objectionable AOL Content"), AOL will, to the extent such Objectionable AOL Content is within AOL's control, use commercially reasonable efforts to respond in good faith to such complaints or concerns. Advertiser shall use reasonable efforts to post (or update, as the case may be) the creative content supplied by AOL within the spaces for the AOL Promos within five days of its receipt of such content from AOL. In the event that AOL elects to serve the AOL Promos to the Advertiser Web Site from an ad server controlled by AOL or its agent, Advertiser shall take all reasonable operational steps necessary to facilitate such ad serving arrangement including, without limitation, inserting HTML code designated by AOL on the pages of the Advertiser Web Site on which the AOL Promos will appear. In addition, in Advertiser's television, radio, print and "out of home" (e.g., buses and billboards) advertisements and in any publications, programs, features or other forms of media over which Advertiser exercises at least partial editorial control, Advertiser will include specific references or mentions (verbally where possible) of the availability of the Affiliated Advertiser Site through the AOL Service, [***] (by way of site name, related company name,

URL or otherwise). Without limiting the generality of the foregoing, (i) Advertiser's listing of the "URL" for any Advertiser Web Site will be accompanied by an equally prominent listing of the "keyword" term on AOL for the Affiliated Advertiser Site (if any) and (ii), Advertiser shall use commercially reasonable efforts to promote any special offers offered on the AOL Service through its offline promotional efforts (e.g., cable and or television advertising buys). In connection with the foregoing, AOL will
[***] for any new subscribers to the AOL Service who subscribe to the AOL

Service through the AOL Promo.

7. Functionality of Advertiser Product. In the event that any Advertiser Products (or any software associated therewith) that are promoted and sold through the Advertisements result in a poor user experience for a significant number of AOL users (e.g., poor user interface, incompatible software, unusable software, software which contain bugs or viruses which substantially reduces the usability of the Advertiser Product, or software which does not perform the functions for which it is advertised), and provided that Advertiser does not remedy such poor user experience within
[***] after written notice from AOL [***] In the event of such [***].

8. Distribution of Advertiser Software with AOL Store Fulfillment Packages.
AOL will facilitate the distribution of the software developed by Advertiser which is necessary for the operation of Advertiser's electronic stamp product and enables end-users to purchase postal services electronically through Advertiser's network (the "Advertiser Software") through a third party package fulfillment distributor (the "Distributor") in accordance with the terms and conditions of the agreement attached hereto as Exhibit D. Advertiser will pay the Distributor up to [***] (the

"Set-Aside Payment") in consideration for the distribution of the Advertiser Software. [***]

9. Distribution of Advertiser Software with AOL 4.0 CD-ROMS. AOL will distribute the Advertiser Software of Advertiser in accordance with the provisions of Exhibit E attached hereto.

---------------
[***]  Confidential treatment has been requested for the bracketed portions.
       The confidential redacted portion has been omitted and filed separately
       with the Securities and Exchange Commission.

6

10. Stamp Days Promotion/Rainman Production. With respect to the Special Campaign Promotion: Stamp/Postage Days listed on Exhibit B (each a "Stamp Day Promotion" and collectively "Stamp Day Promotions"), AOL will work with Advertiser to create various editorial and programming content related to the Advertiser Products. AOL shall be responsible for the creation of a rainman area (the " Stamp Rainman Area") on the AOL Service to promote Stamp Days. Advertiser shall be responsible for providing AOL with content and promotions to be promoted by AOL during Stamp Days. At Advertiser's option, the Stamp Days promotion may occur over a period of three (3) contiguous days or three (3) separate and unrelated days and Advertiser shall provide AOL with no less than forty five (45) days notice prior to the time that Advertiser wishes to receive the Stamp Days promotion or a Stamp Day promotion. In addition to the Stamp Rainman Area, AOL will program and create at least one other rainman area for Advertiser which will contain such content and promotions as mutually agreed upon by the parties hereto (the "Additional Rainman Area" and together with the Stamp Rainman Area the "Rainman Areas"). AOL will incur the expense of creating the Rainman Areas up to [***]. If the costs associated with the Rainman

Areas exceed [***].

11. Keyword: Stamps. AOL will create a [***] in the appropriate areas of the

AOL Service to which Keyword Stamp or Stamps will link. Such [***] will

contain programming created by AOL in its sole discretion, provided that, AOL shall provide Advertiser with a button or link on such screen which will link to the Advertiser Site or any other area agreed upon by the parties and Advertiser shall be the [***]. In addition to the foregoing,

subject to the provisions hereof, Advertiser shall have the right to use the AOL Keyword Term Stamps.com and [***] additional AOL Keyword Term as

mutually agreed upon by the parties.

---------------
[***]  Confidential treatment has been requested for the bracketed portions.
       The confidential redacted portion has been omitted and filed separately
       with the Securities and Exchange Commission.

7

EXHIBIT B

PHASE II PROMOTIONS

-------------------------------------------------------------------------------------------------------------------
                                           Impressions        Percent of         Average CPM          Total Cost
                                                               Carriage
-------------------------------------------------------------------------------------------------------------------
Level A -- Highly Targeted                    [***]             [***]               [***]               [***]
                                               ---               ---                 ---                 ---
-------------------------------------------------------------------------------------------------------------------
Level B - Targeted                            [***]             [***]               [***]               [***]
                                               ---               ---                 ---                 ---
-------------------------------------------------------------------------------------------------------------------
Level C -- Relevant Broad Reach               [***]             [***]               [***]               [***]
                                               ---               ---                 ---                 ---
-------------------------------------------------------------------------------------------------------------------
Campaign Promotion: Stamp Days                [***]             [***]               [***]               [***]
                                               ---               ---                 ---                 ---

-------------------------------------------------------------------------------------------------------------------
Total Campaign                                [***]             [***]               [***]               [***]
                                               ---               ---                 ---                 ---
-------------------------------------------------------------------------------------------------------------------

            Level A Promotions                     Type of Promotion
            ------------------                     -----------------
                   AOL Network
                         [***]                     [***]
                          ---                       ---


                       AOL.com
                         [***]
                          ---


                    CompuServe
                    ----------
                         [***]                     [***]
                          ---                       ---


                 Level B Areas
                 -------------

                       AOL.com
                         [***]                     [***]
                          ---                       ---


                  Digital City
                         [***]                     [***]
                          ---                       ---

                 Level C Areas
                 -------------

                   AOL Network
                         [***]                     [***]
                          ---                       ---


                       AOL.com
                         [***]                     [***]
                          ---                       ---

---------------
[***]  Confidential treatment has been requested for the bracketed portions.
       The confidential redacted portion has been omitted and filed separately
       with the Securities and Exchange Commission.

8

Special Campaign Promotion:
Stamp/Postage Days (3-day

promotion)
Email
News
AOL Network
Remnant and Promotional Support
Vehicles


*Subject to Advertiser's compliance with all technical and programming requirements (including quality assurance testing) of AOL.
**Advertiser will only be provided with these Promotions if the Phase II Promotions [***]

*** List to include: mail, mailing, post, postal, postage, stamp, stamps

---------------
[***]  Confidential treatment has been requested for the bracketed portions.
       The confidential redacted portion has been omitted and filed separately
       with the Securities and Exchange Commission.

9

EXHIBIT C

AOL Advertising Standard Terms and Conditions

1. Advertising Material/Display. Advertiser acknowledges that the sole obligation of America Online, Inc. ("AOL") is to display an advertisement or icon (the "Advertisement") from Advertiser which conforms to the specifications set forth in the applicable Insertion Order Agreement which has been executed by AOL and Advertiser (the "Insertion Order," and, collectively with these Standard Terms and Conditions, the "Insertion Order Agreement") through the standard narrowband U.S.-based America Online brand service (excluding any sub-products, sub-services or third party areas which may be offered therein) or such other U.S.-based AOL property as may be expressly described as the site for placement in the Insertion Order (the "AOL Service"). Subject to Advertiser's reasonable approval, AOL will have the right to fulfill its promotional commitments with respect to the Advertisements by providing Advertiser with comparable placements of the Advertisements in alternative areas of the AOL Service. AOL reserves the right to redesign or modify the organization, structure, "look and feel" and other elements of the AOL Service (including any redesign of the Workplace Business Services: Postage Category) at its sole discretion at any time without prior notice (a "Redesign"). In the event such modifications will materially and adversely affect the placement of the Advertisement, AOL will work with Advertiser to display the Advertisement in a comparable location and manner that is reasonably satisfactory to Advertiser. Except as expressly provided in the Insertion Order, the specific nature and positioning of the Advertisement will be as determined by AOL in its editorial discretion. Advertiser agrees that AOL has the right to market, display, perform, transmit and promote the Advertisement through the AOL Service and in connection therewith, subject to the terms and conditions hereof, Advertiser hereby grants to AOL a non-exclusive, non-sublicensable (except to an Affiliate of AOL) and non-transferable license to use the names specified by Advertiser from time to time which Advertiser shall have a legal right to use (the "Advertiser Marks") in the Advertisements and in connection with the advertising, marketing and promotion of the Advertiser Products on the AOL Service. Additionally, AOL shall have the right to use the Advertiser Marks in connection with the distribution of the Advertiser Software in accordance with Exhibit E. AOL hereby acknowledges and agrees that (i) except as set forth herein, AOL has no rights, title or interest in or to the Advertiser Marks, (ii) AOL shall not challenge Advertiser's exclusive rights in and to the Advertiser Marks, (iii) AOL shall not apply for registration of the Advertiser Marks anywhere in the world, (iv) AOL shall not alter any of the Advertiser Marks in any way and shall use the Advertiser Marks exactly as provided by Advertiser, (v) the use by AOL of the Advertiser Marks shall inure to the benefit of Advertiser with respect to Advertiser's rights and ownership in and to the Advertiser Marks, and
(vi) Advertiser reserves all rights not expressly granted to AOL hereunder in connection with the Advertiser Marks. AOL shall use reasonable efforts to notify Advertiser promptly of any infringement of any copyrights, trademarks, or other intellectual property or proprietary rights relating to the Advertiser Software of which AOL is aware. Advertiser may, in its sole discretion, take or not take whatever action it believes is appropriate in connection with any such infringement. In the event that AOL intends to use an Advertiser Mark in a manner which was not previously approved by Advertiser, AOL shall provide notice to Advertiser of its intended use of such Advertiser Mark, Advertiser shall then have three (3) business days to respond to AOL's proposed use of such Advertiser Mark, and if Advertiser does not respond in such three (3) day period, AOL's use of such Advertiser Mark shall be deemed approved. Additionally, Advertiser agrees that users of the AOL Service have the right to access and use the Advertisement together with any content or materials linked to the Advertisement (the "Advertiser Content"). The Advertiser Content (a) shall not offer or promote any other products and/or services other than those expressly provided for in the relevant Insertion Order, (b) will link only to the site specified on the Insertion Order and (c) shall not (1) disparage AOL; (2) promote any product or service which is reasonably competitive with one or more of the principal products or services offered through AOL's products and services (other than the Advertiser Products) ("Competitive Products") on any page of the Affiliated Advertiser Site which is directly linked to the AOL Service; (3) be in contravention of AOL's generally applicable advertising standards and practices, as such may be modified by AOL from time to time; or (d) violate any applicable law, regulation or third party right (including, without limitation, any copyright, trademark, patent or other proprietary right). Additionally, Advertiser shall consistently update the Advertiser Content and will review, delete, edit, create, update and otherwise manage such content in accordance with the terms of this Insertion Order Agreement. In no event shall the Advertisement or the linked area state or imply that (i) the Advertisement was placed by AOL or (ii) that AOL endorses Advertiser's products or services. To the extent AOL notifies Advertiser of reasonable complaints or concerns (e.g., from an AOL member) regarding the Advertiser Content or any other content or materials linked thereto or associated therewith ("Objectionable Content"), Advertiser will, to the extent such Objectionable Content is within Advertiser's control, use commercially reasonable efforts to respond in good faith to such complaints or concerns. AOL may alter or shorten the flight dates set forth in the Insertion Order if advertising materials required per the Insertion Order are not provided in a timely manner, and Advertiser shall not be entitled to any refund or proration for delays caused by Advertiser's failure to deliver such materials.

2. Operations. Unless expressly provided for elsewhere in this Insertion Order Agreement, AOL will have no obligation to provide any creative, design, technical or production services to Advertiser ("Services"). Delivery by AOL of any such Services shall be subject to (i) AOL's availability to perform the requested work, (ii) execution by both parties of a separate work order specifically outlining the Services to be provided and the fees to be paid by Advertiser for such Services and (iii) payment in advance by Advertiser of such fees. Advertiser will ensure that the Advertiser Content and the site linked to the Advertiser Content are in compliance with AOL's then- current, generally applicable technical standards and will take all reasonable steps necessary to conform the Advertiser Content to the then- existing technologies identified by AOL which are optimized for the AOL Service (including, without limitation, any "quick checkout" tool which AOL may implement to facilitate purchase of products by AOL users). In the event that the Advertiser Content or the site linked to the Advertiser Content fails to comply with AOL's generally applicable technical standards, AOL shall have the right to cease or decrease the placement of the Advertisements, and if Advertiser is unable to cure such non-compliance within five business days after notice from AOL, AOL shall have the right to terminate this Insertion Order Agreement. Additionally, AOL will be entitled to discontinue links to Advertiser Content to the extent such Advertiser Content will, in AOL's good faith judgment, adversely affect the operations of the AOL Service. Advertiser will bear full responsibility for all customer service, including without limitation, order processing, billing, fulfillment, shipment, collection and other customer support associated with any products or services offered, sold or licensed through Advertiser's site, and AOL will have no obligations whatsoever with respect thereto. Advertiser will take all steps necessary to ensure that any contest, sweepstakes or similar promotion conducted or promoted through the Advertiser Content complies with all applicable federal, state and local laws and regulations.

3. Search Terms/Keywords. To the extent Advertiser is purchasing an Advertisement related to an Internet-based "search" term, Advertiser represents and warrants that Advertiser has the legal rights necessary to utilize such search term in connection with the Advertisement. Any "keyword" terms for navigation from within the proprietary America Online brand service ("AOL Keyword Terms") (as contrasted to Internet-based search terms) which may be made available to Advertiser shall be (i) subject to availability and (ii) limited to the combination of the keyword modifier combined with a

10

registered trademark of Advertiser. AOL reserves the right to revoke at any time Advertiser's use of any AOL Keyword Terms which do not incorporate registered trademarks of Advertiser. Advertiser acknowledges that its utilization of any AOL Keyword Term will not create in it, nor will it represent it has, any right, title or interest in or to such AOL Keyword Term, other than the right, title and interest Advertiser holds in Advertiser's registered trademark independent of the AOL Keyword Term.

4. Payment; Cancellation. Advertiser agrees to pay AOL for all advertising displayed in accordance with the agreed upon amounts and billing schedule shown on the relevant Insertion Order. Advertising packages are nonrefundable or proratable except to the extent otherwise expressly contemplated hereunder. Should AOL fail to display the Advertisements in accordance with the Insertion Order due to Advertiser's failure to comply with any requirement of the Insertion Order or this Insertion Order Agreement, Advertiser will remain liable for the full amount indicated on the Insertion Order. In the event of a Redesign, if AOL and Advertiser cannot reach agreement on a substitute placement, Advertiser shall have the right to cancel the Advertisement upon thirty (30) days advance written notice to AOL. In such case, Advertiser will only be responsible for the pro-rata portion of payments attributable to the period from the commencement of the Insertion Order Agreement through the effectiveness of such cancellation (the "Pro Rata Payments"). AOL reserves the right to cancel and remove at any time any Advertisement in the event that AOL reasonably and in good faith believes that further display of the Advertisement will expose AOL to liability or other adverse consequences. In the event of such a cancellation, Advertiser will only be responsible for the Pro-Rata Payments. Advertiser may not resell, trade, exchange, barter or broker to any third-party any advertising space which is the subject of this Insertion Order Agreement.

5. Usage Data. AOL will provide Advertiser with usage information related to the Advertisement in substance and form determined by AOL, consistent with its then-standard reporting practices. Advertiser may not distribute or disclose usage information to any third party without AOL's prior written consent. Additionally, AOL will not disclose usage information to a third party in a manner which connects Advertiser to such usage information.

6. Each party acknowledges that Confidential Information may be disclosed to the other party during the course of this Insertion Order Agreement. Each party agrees that it will take reasonable steps, at least substantially equivalent to the steps it takes to protect its own proprietary information, during the term of this Insertion Order Agreement, and for a period of three years following expiration or termination of this Insertion Order Agreement, to prevent the duplication or disclosure of Confidential Information of the other party, other than by or to its employees or agents who must have access to such Confidential Information to perform such party's obligations hereunder, who will each agree to comply with this Section 6. Notwithstanding the foregoing, either party may issue a press release or other disclosure containing Confidential Information without the consent of the other party, to the extent such press release or disclosure is required by law, rule, regulation or government or court order. In such event, the disclosing party will provide at least five (5) business days prior written notice of such proposed disclosure to the other party. Further, in the event such disclosure is required of either party under the laws, rules or regulations of the Securities and Exchange Commission or any other applicable governing body, such party will (i) redact mutually agreed-upon portions of this Insertion Order Agreement to the fullest extent permitted under applicable laws, rules and regulations and (ii) submit a request to such governing body that such portions and other provisions of this Insertion Order Agreement receive confidential treatment under the laws, rules and regulations of the Securities and Exchange Commission or otherwise be held in the strictest confidence to the fullest extent permitted under the laws, rules or regulations of any other applicable governing body. For the purposes hereof, "Confidential Information" shall mean any information relating to or disclosed in the course of the Insertion Order Agreement, which is or should be reasonably understood to be confidential or proprietary to the disclosing party, including, but not limited to, the material terms of this Insertion Order Agreement, information about AOL users, technical processes and formulas, source codes, product designs, sales, cost and other unpublished financial information, product and business plans, projections, and marketing data. "Confidential Information" will not include information (a) already lawfully known to the receiving party and which the receiving party has a reasonable basis to believe it may use or disclose without restriction, (b) independently developed by the receiving party, (c) disclosed in published materials except as disclosed by the receiving party in breach of this Section 6, (d) generally known to the public except as disclosed by the receiving party in breach of this Section 6, or (e) lawfully obtained from any third party without restriction.

7. Limitation of Liability; Disclaimer; Indemnification.
(A) EXCEPT AS PROVIDED IN SECTION 7(C)(I)(A) AND SECTION 7(C)(II)(A) BELOW, UNDER NO CIRCUMSTANCES SHALL EITHER PARTY BE LIABLE TO THE OTHER PARTY FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY DAMAGES (EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES), ARISING FROM ANY ASPECT OF THE ADVERTISING RELATIONSHIP PROVIDED FOR HEREIN. EXCEPT AS PROVIDED IN SECTION 7(C) LIABILITY ARISING UNDER THIS INSERTION ORDER AGREEMENT WILL BE LIMITED TO DIRECT, OBJECTIVELY MEASURABLE DAMAGES, AND THE MAXIMUM LIABILITY OF ONE PARTY TO THE OTHER PARTY FOR ANY CLAIMS ARISING IN CONNECTION WITH THIS INSERTION ORDER AGREEMENT WILL NOT EXCEED THE AGGREGATE AMOUNT TO BE PAID BY ADVERTISER DURING THE YEAR IN WHICH THE LIABILITY ACCRUES.
(B)(I)(A) AOL MAKES NO AND HEREBY SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THE AOL SERVICE OR ANY PORTION THEREOF, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND IMPLIED WARRANTIES ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE; WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, AOL SPECIFICALLY DISCLAIMS ANY WARRANTY REGARDING (1) THE NUMBER OF PERSONS WHO WILL ACCESS THE ADVERTISER CONTENT OR "CLICK-THROUGH" THE ADVERTISEMENTS,
(2) ANY BENEFIT ADVERTISER MIGHT OBTAIN FROM INCLUDING THE ADVERTISEMENT WITHIN THE AOL SERVICE AND (3) THE FUNCTIONALITY, PERFORMANCE OR OPERATION OF THE AOL SERVICE WITH RESPECT TO THE ADVERTISEMENTS, AND (B) EXCEPT AS SPECIFICALLY PROVIDED IN CLAUSE II BELOW, ADVERTISER MAKES NO AND HEREBY SPECIFICALLY DISCLAIMS ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND IMPLIED WARRANTIES ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE.
(II) Advertiser warrants to AOL that the Advertiser Software will, under normal use, conform to the limited warranty contained in the Software License Agreement (as defined in Exhibit E) applicable to the Advertiser Software during the warranty period set forth in such Software License Agreement (the "Warranty Period"). The foregoing warranty will apply only to the version of the Advertiser Software distributed by AOL in accordance with Exhibit E. If a Customer (as defined in Exhibit E) contacts Advertiser during the Warranty Period claiming a breach of the warranty set forth in the Software License Agreement provided with the Advertiser Software distributed by AOL in accordance with Exhibit E, Advertiser will use reasonable efforts to resolve the claim directly with such Customer by correcting or replacing such Advertiser Software. If a Customer contacts AOL during the Warranty Period claiming any such breach of warranty, AOL will use reasonable efforts to promptly refer the matter to Advertiser.
(C) (i) Advertiser hereby agrees to indemnify, defend and hold harmless AOL and the officers, directors, agents, affiliates,

11

distributors, franchises and employees of AOL from and against all claims, actions, liabilities, losses, expenses, damages and costs (including, without limitation, reasonable attorneys' fees) that may at any time be incurred by any of them by reason of any claims, suits or proceedings to the extent such claims, suits or proceedings arise out of or are related to: (a) third party claims (1) for libel, defamation, violation of right of privacy or publicity, copyright infringement, trademark infringement or other infringement of any third party right, fraud, false advertising, misrepresentation, product liability or violation of any law, statute, ordinance, rule or regulation throughout the world in connection with the Advertisements or Advertiser Content provided by Advertiser to AOL hereunder or in connection with the Advertiser Software distributed by AOL hereunder (collectively referred to as the "Advertiser Rights Violations"); provided, however, that Advertiser shall have no such indemnification obligation to the extent that any alleged Advertiser Rights Violation arises from or in connection with any (x) modification or other alteration of any Advertisement or Advertiser Content provided to AOL by Advertiser hereunder, without Advertiser's prior approval, (y) (i) use of any Advertisement or Advertising Content other than in a manner specified hereunder or authorized by Advertiser (ii) claim based upon the combination of the Advertisement, the Advertising Content, or the Advertiser Software with other content, software technology or materials which Advertiser has not approved, or (z)
(i) any Advertiser Software that has been modified by AOL without the prior consent of Advertiser, (ii) use of the Advertiser Software by AOL in a manner which is beyond the scope of the license granted to it by Advertiser pursuant to Exhibit E, (iii) AOL's use of the Advertiser Software after notice from Advertiser of infringement or misappropriation ((i) (ii) and
(iii) collectively the "Advertiser Software Exceptions"); (2) any material breach by Advertiser of any duty, representation or warranty under this Insertion Order Agreement; or (3) any contaminated file, virus, worm or Trojan horse originating solely from the Advertisements or Advertiser Content, or (4) solely arising out of or in connection with the ability of the Advertiser Software distributed by AOL hereunder to process calendar date values, including but not limited to, calendar date values from January 1, 1999 through or beyond January 1, 2000, and in processing such calendar values, to operate in accordance with the procured system documentation or whether any or all data fields for calendar date values and data are four digit fields capable of indicating century and millennium or addressing leap years correctly, and (b) any contaminated file, virus, worm or Trojan horse originating solely from the Advertisements or Advertiser Content.

(ii) [***]

(iii) [***]

8. Solicitation.
(a) Advertiser will not send unsolicited, commercial e-mail (i.e., "spam") through or into AOL's products or services, absent a prior business relationship, and will comply with any other standard AOL policies and limitations relating to distribution of bulk e-mail solicitations or communications through or into AOL's products or services (including, without limitation, the requirement that Advertiser provide a prominent and easy means for the recipient to "opt-out" of receiving any future commercial e-mail communications from Advertiser. Advertiser will not use the Advertisement or any other aspect of AOL's products or services to promote or solicit on behalf of a Competitive Product.
(b) Advertiser shall ensure that its collection, use and disclosure of information obtained from AOL members under this Insertion Order Agreement ("Member Information") complies with (i) all applicable laws and regulations and (ii) AOL's standard privacy policies, available on the AOL Service at the keyword term "Privacy" (or, in the case of Advertiser's site, Advertiser's standard privacy policies so long as such policies are prominently published on the site and provide adequate notice, disclosure and choice to users regarding Advertiser's collection, use and disclosure of user information).
(c) Advertiser shall ensure that each request of Member Information shall clearly and conspicuously specify to the AOL members at issue the purpose for which the Member Information collected by Advertiser shall be used (the "Specified Purpose"). Advertiser shall limit use of the Member Information to the Specified Purpose. In the case of AOL members who purchase products or services from Advertiser, Advertiser will be entitled to incorporate such members into Advertiser's aggregate lists of customers; provided that Advertiser shall in no way: (i) disclose Member Information in a manner that identifies AOL members as end-users of an AOL product or service (or in any other manner that could reasonably be expected to facilitate use of such information by or on behalf of a Competitive Product); or (ii) otherwise use such Member Information in connection with marketing of a Competitive Product. This section shall survive the completion, expiration, termination or cancellation of this Insertion Order Agreement.

9. Miscellaneous. The parties to this Insertion Order Agreement are independent contractors. Neither party is an agent, representative or partner of the other party. Neither party shall have any right, power or authority to enter into any agreement for or on behalf of, or incur any obligation or liability of, or to otherwise bind, the other party. The failure of either party to insist upon or enforce strict performance by the other party of any provision of this Insertion Order Agreement or to exercise any right under this Insertion Order Agreement shall not be construed as a waiver or relinquishment to any extent of such party's right to assert or rely upon any such provision or right in that or any other instance. Except where otherwise specified herein or in the Insertion Order, the rights and remedies granted to a party under this Insertion Order Agreement are cumulative and in addition to, and not in lieu of, any other rights or remedies which the party may possess at law or in equity. Advertiser shall not (i) issue any press releases or public statements concerning the existence or terms of this Insertion Order Agreement or (ii) use, display or modify AOL's trademarks in any manner absent AOL's express prior written approval. Either party may terminate this Insertion Order Agreement (a) at any time with written notice to the other party in the event of a material breach of this Insertion Order Agreement by the other party, which remains uncured after thirty days written notice thereof; (b) immediately following written notice to the other party if the other party (1) ceases to do business in the normal course, (2) becomes or is declared insolvent or bankrupt, (3) is the subject of any proceeding related to its liquidation or insolvency (whether voluntary or involuntary) which is not dismissed within ninety (90) calendar days, or (4) makes an assignment for the benefit of creditors. Additionally, in the event of a change of control of Advertiser which results in control of more than 50% of the equity securities of Advertiser or the power to vote for the election of directors or other governing authority of Advertiser by an AOL Competitor , AOL may terminate this Insertion Order Agreement by providing forty five (45) days prior written notice of such intent to terminate. For the purposes hereof, an "AOL Competitor" shall be any entity listed on Exhibit F attached hereto; provided, however, that from time to time AOL shall have the right to add to such list as reasonably determined by AOL, provided that AOL may add to such list no more than once every three months. Notwithstanding the foregoing, to the extent that Advertiser can demonstrate to AOL's reasonable satisfaction that Advertiser is engaged in negotiations with any third party that is not listed on Exhibit F, which negotiations would result in a change of control of Advertiser as provided herein, AOL shall not have the right to add such third party to the list after Advertiser has so reasonably demonstrated to AOL that Advertiser is in negotiations with such third party. This Insertion Order Agreement sets forth the entire agreement between Advertiser and AOL, and supersedes any and all prior agreements of AOL or Advertiser with respect to the transactions set forth herein. No change, amendment or modification of any provision of this Insertion Order Agreement shall be valid unless set forth in a written instrument signed by the party subject to enforcement of such amendment. Advertiser shall not assign this Insertion Order Agreement or any right, interest or benefit under this Insertion Order Agreement without the prior written consent of AOL. Assumption of the Insertion Order Agreement by any successor to Advertiser (including, without


[***] Confidential treatment has been requested for the bracketed portions. The confidential redacted portion has been omitted and filed separately with the Securities and Exchange Commission.

12

limitation, by way of merger or consolidation) shall be subject to AOL's prior written approval. Subject to the foregoing, this Insertion Order Agreement shall be fully binding upon, inure to the benefit of and be enforceable by the parties hereto and their respective successors and assigns. In the event that any provision of this Insertion Order Agreement is held invalid by a court with jurisdiction over the Parties to this Insertion Order Agreement, (i) such provision shall be deemed to be restated to reflect as nearly as possible the original intentions of the Parties in accordance with applicable law and (ii) the remaining terms, provisions, covenants and restrictions of this Insertion Order Agreement shall remain in full force and effect. Both parties shall adhere to all applicable laws, regulations and rules relating to the export of technical data and shall not export or re-export any technical data, any products received from the other party or the direct product of such technical data to any proscribed country listed in such applicable laws, regulations and rules unless properly authorized. This Insertion Order Agreement may be executed in counterparts, each of which shall be deemed an original and all of which together shall constitute one and the same document. Except with respect to any claims brought by Advertiser in connection with Exhibit E or with respect to the AOL Promos, this Insertion Order Agreement shall be interpreted, construed and enforced in all respects in accordance with the laws of the Commonwealth of Virginia, except for its conflicts of laws principles. Except as otherwise provided herein, Advertiser hereby irrevocably consents to the exclusive jurisdiction of the courts of the Commonwealth of Virginia and the federal courts situated in the Commonwealth of Virginia in connection with any action arising under this Insertion Order Agreement. With respect to any claims brought by Advertiser in connection with Exhibit E or with respect to the AOL Promos, such claims will be interpreted and enforced in accordance with the laws of the State of California and AOL hereby consents to the exclusive jurisdiction of the courts of the State of California and the federal courts situated in the State of California in connection with any claim brought by Advertiser in connection with Exhibit E or with respect to the AOL Promos.

13

EXHIBIT D

AOL TO PROVIDE

14

EXHIBIT E

ADVERTISER SOFTWARE DISTRIBUTION TERMS AND CONDITIONS

1. Terms and Conditions. The following terms and conditions shall govern the distribution by AOL of the advertiser software.

2. Definitions. As used in this Exhibit E, the following terms shall have the following meanings:

"Affiliate" shall mean an entity in which AOL holds at least a nineteen percent (19%) equity interest.
"AOL Client" shall mean the object code form of the client software for Win16, Win32 and Mac developed and distributed by AOL that enables end-users to subscribe to, access and use the AOL Service, and upgrades thereto. "Authorized Testing Service" shall mean any third-party person or entity designated in writing by AOL, in its sole discretion, to offer support and quality assurance services relating to interoperability of third party products with the AOL Client and the AOL Service.
"Commerce Customer" shall mean any Customer of Advertiser acquired through distribution of the Advertiser Software by AOL as provided hereunder and who purchases the Advertiser Product at least two times.
"Customer" shall mean end-user customers of the Advertiser Software. "Documentation" shall mean the documentation provided to AOL by Advertiser for use with the Advertiser Software. "Software "License Agreement" shall mean Advertiser's standard software license agreement between Advertiser and Customers, as provided by Advertiser to AOL for inclusion with the Advertiser Software.

3. License Grant. Subject to all the terms and conditions of this Insertion Order Agreement, Advertiser hereby grants to AOL and its Affiliates a worldwide, non-exclusive, non-transferable, royalty-free license to use, reproduce, market, promote and distribute to end users through its usual and customary channels of distribution, solely to the limited extent and for the express purposes stated herein, the Advertiser Software in object code form, through CD-ROMs any other physical media containing the AOL client.

4. Copying/Reverse Engineering. AOL agrees not to (i) disassemble, decompile or otherwise reverse engineer the Advertiser Software or otherwise attempt to learn the source code, structure, algorithms or ideas underlying the Advertiser Software, (ii) take any action contrary to Advertiser's Software License Agreement, except as expressly and unambiguously agreed upon by Advertiser, (iii) alter or modify the Advertiser Software except as agreed upon by Advertiser, (iv) attempt to disable any security devices or codes incorporated in the Advertiser Software, or (v) allow or assist others to do any of the foregoing.

5. Advertiser's Obligations.

(i) Certification Requirements. AOL shall provide to Advertiser a written copy of, and Advertiser shall comply with, all quality assurance and testing requirements for the Advertiser Software to be distributed by AOL hereunder, as may be reasonably amended by AOL from time to time, and together with any other reasonable quality assurance and testing requirements delivered by AOL in writing (including amendments) to Advertiser, the ("Certification Requirements").

(ii) Support and Quality Assurance by the Authorized Testing Service. The Authorized Testing Service shall provide support and quality assurance testing with respect to the Advertiser Software and interoperability of such products with the AOL Client and the AOL Service. Support and quality assurance testing shall be provided on terms and conditions to be worked out between Advertiser and the Authorized Testing Service and at Advertiser's expense. In connection with the foregoing, Advertiser shall deliver a master copy of the Advertiser Software in object code form, along with any required Documentation to the Authorized Testing Service and AOL no later than
[***]. The Authorized Testing Service shall perform quality assurance

testing on the Advertiser Products in accordance with the Certification Requirements. If and when the Authorized Testing Service determines that any such product meets the relevant Certification Requirements, the Authorized Testing Service shall then certify in writing that such product is a "Complying Product". AOL shall use commercially reasonable efforts, if and to the extent within its control and consistent with the purposes hereof, to help expedite such testing processes by the Authorized Testing Service.

(iii) AOL Release Approval. AOL shall have the right to inspect the

           Complying Product prior to commercial production or public release by
           AOL under this Agreement. AOL shall, in its discretion (but based
           upon commercially reasonable factors (including without limitation a
           change of control of Advertiser, or technical or operational problems
           or incompatibilities), provide notice of approval or rejection within
           fifteen (15) business days of receiving certification from the
           Authorized Testing Service that such product is a Complying Product
           together with a copy of the Complying Product.

-----------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.

                                      15

           AOL shall have no obligation to distribute any copy of the Advertiser
           Software that has not first obtained release approval from AOL. The
           parties may negotiate in good faith to cure any circumstance or issue
           causing AOL to so reject, provided that if AOL does not approve
           release pursuant to this Section 5(iii), then AOL shall refund to
           Advertiser any payments made by Advertiser to AOL pursuant to Section
           9(i) of this Exhibit E.

(iv) Re-certification Requirements. Revisions of copies of the Advertiser Software that have previously been certified by the Authorized Testing Service must be re-certified. For purposes of this provision, a "revision" is defined as any version of a Complying Product that contains programming code that differs materially from the Complying Product. Without limiting the foregoing, revisions include maintenance updates, patches, fixes, and new releases of a Complying Product. Revisions to a Complying Product shall be re-certified according to the Certification Requirements, unless AOL or the Authorized Testing Service first provides to Advertiser in writing a list of "Re-Certification Requirements," if any, in which case such Re-Certification Requirements shall apply.

6. AOL's Distribution Obligations. Subject to the provisions of Section 5 of this Exhibit E, and provided that Advertiser is otherwise in compliance with the provisions of this Insertion Order Agreement, AOL shall distribute the Advertiser Software with a [***] AOL 4.0 CD-ROMs containing the AOL

Client which is sent by AOL in direct marketing programs to prospective AOL customers during the period commencing on [***] (the "Distribution Period");

provided however, that (i) AOL shall have the right to continue distribution of the Advertiser Software after the Distribution Period has ended subject to the terms and conditions hereof and (ii) if Advertiser shall not have delivered a master copy of the Advertiser Software to the authorized testing service and AOL by [***], then AOL shall no longer be obligated to

distribute the Advertiser Software with [***] AOL 4.0 CD-ROMs, and in such

event, AOL `s sole obligation will be to distribute the Advertiser Software during the period commencing on the date on which the Advertiser Software becomes a complying product and ending at the end of the Distribution Period. When the end-user installs the AOL Client on the end-user's system, the Advertiser Software installation program will be automatically copied onto the end-user's hard drive, and the end-user will be presented with the opportunity to install the Advertiser Software. AOL will distribute the Advertiser Software together with, and subject to, the terms of the Software License Agreement furnished by Advertiser. Notwithstanding the foregoing,
(i) once AOL begins distribution of the advertiser software, AOL shall not be obligated to distribute any updates or upgrades to the Advertiser Software, and (ii) AOL reserves the right, in the event of technical problems or incompatibilities (e.g., new "bugs"), excessive usage, or other situations which may adversely affect the user experience or AOL's costs (collectively, an "Adverse User Situation"), not to include any Advertiser Software on such CD-ROMs (a "Pull"); provided however that, in the event of a Pull, AOL shall deliver written notice thereof to Advertiser within five
(5) business days of such Pull. A Pull will remain in effect as long as any Adverse User Situation remains, in AOL's reasonable discretion. If such Adverse User Situation is not cured to AOL's reasonable satisfaction within thirty (30) days from such notice, then AOL's obligations hereunder shall terminate, and Advertiser shall not be obligated to make any further payments under section 9(i) hereof.

7. Distribution Requirements. End-users who install the Advertiser Software distributed pursuant to this will be prompted to send an electronic registration to Advertiser the first time they attempt to use the Advertiser Software via the end-user system on which the Advertiser Software is installed. During such electronic registration, Advertiser shall create a process by which such end-user will be identified as a user obtained through the 4.0 CD-ROMs distributed by AOL hereunder. AOL agrees not to interfere with, obfuscate, remove or alter any of the automatic installation mechanisms, electronic registration mechanisms, or patent, copyright or other proprietary rights notices included in the Advertiser Software provided by Advertiser to AOL. AOL's obligations under this Section 7 shall be contingent upon Advertiser's delivery of Advertiser Software that has been quality assurance tested in accordance with Section 5 hereof.

8. Installation and Support. Advertiser shall be solely responsible for providing Customers with installation, maintenance and technical integration support with respect to the Advertiser Software. AOL shall notify Advertiser as soon as possible of AOL's receipt of any customer requests for support or assistance with respect to the Advertiser Software.

9. Payments. In connection with AOL's obligations hereunder, Advertiser shall pay to AOL the following:

(i) [***]

(ii) [***]

----------------
[***]  Confidential treatment has been requested for the bracketed portions. The
       confidential redacted portion has been omitted and filed separately with
       the Securities and Exchange Commission.

16

10. Auditing Rights. Advertiser will maintain complete, clear and accurate records of all expenses, revenues and fees in connection with the performance of this Insertion Order Agreement, including reports which indicate the number of customers acquired as a result of the distribution of the Advertiser Software by AOL, and the number of such customers which become Commerce Customers . For the sole purpose of ensuring compliance with Section 9(ii) of this Insertion Order Agreement, AOL (or its representative) will have the right to conduct a reasonable and necessary inspection of portions of the books and records of Advertiser which are relevant to Advertiser's performance pursuant to this Insertion Order Agreement. Any such audit may be conducted after twenty (20) business days prior written notice to Advertiser. AOL shall bear the expense of any audit conducted pursuant to this Section 9 unless such audit shows an error in AOL's favor amounting to a deficiency to AOL in excess of five percent (5%) of the actual amounts paid and/or payable to AOL hereunder, in which event Advertiser shall bear the reasonable expenses of the audit. Advertiser shall pay AOL the amount of any deficiency discovered by AOL within thirty
(30) days after receipt of notice thereof from AOL. This provision shall survive the termination or expiration of this Insertion Order Agreement for an additional three year period.

17

EXHIBIT F

[***]


[***] Confidential treatment has been requested for the bracketed portions. The confidential redacted portion has been omitted and filed separately with the Securities and Exchange Commission.

18

EXHIBIT 23.2

CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the use of our reports (and to all references to our Firm) included in or made a part of this registration statement.

                                        /s/ Arthur Andersen LLP
                                        ________________________________________
                                        ARTHUR ANDERSEN LLP

Los Angeles, California



May 12, 1999