Stamps.com Connects New Microsoft Office System Users to Enhanced E–Postage Service

Stamps.com Offers Free Service During Beta Period to Microsoft Office Beta 2 Testers

SANTA MONICA, Calif. – March 19, 2003 – Stamps.com™ (Nasdaq:STMP – News) announced today that its enhanced software, which works more seamlessly with Microsoft Corp.’s (Nasdaq:MSFT–News) widely–used Microsoft Office software suite, is now available to approximately half a million Beta testers participating in the Microsoft Office System Beta 2 release. To encourage as many Beta testers as possible to experience the convenience of printing e–postage from within Microsoft Office 2003, Stamps.com is offering its online service at no cost during the Microsoft Office System Beta 2 release to all registered Beta users that are new customers of Stamps.com. Microsoft Office System is expected to launch during the summer of 2003.

“Stamps.com has made it easy for Microsoft Office 2003 customers to print e–postage from within the Microsoft Office System,” said Jeff Olund, General Manager, Microsoft Office Online. “We’re excited that Stamps.com has developed ways for Microsoft Office customers to be more productive by providing seamless access to Stamps.com’s mailing and shipping solutions through the Microsoft Office System.”

Stamps.com’s product enhancements on Microsoft Office 2003 enable customers to insert e–postage from within Word 2003 and Outlook 2003. With just a click, Microsoft Office 2003 users can immediately access the Stamps.com service to print envelopes or package shipping labels complete with live postage. In addition, the simplified Stamps.com interface enables users to verify the delivery address against a U.S. Postal Service address database, add a Special Service such as Delivery Confirmation™ or Insurance for their mail piece, or print a company logo or graphic directly on their envelope–all without leaving the familiar Office environment.

“As an e–postage provider accessible through the Microsoft Office System, Stamps.com is positioning its postage technology to better meet the needs of small businesses and individuals throughout the U.S.,” said Ken McBride, CEO of Stamps.com. “We look forward to welcoming many Microsoft Office 2003 Beta testers to our service, and to working closely with Microsoft to further enhance the mailing and shipping experiences of Microsoft customers.”

Microsoft Office System Beta 2 testers can sign up for free Stamps.com service by selecting the e–postage option accessible through the Envelopes and Labels item on the Tools menu, and then completing a brief Stamps.com registration.

About Stamps.com

Stamps.com (Nasdaq: STMP) is a leading provider of Internet–based postage services. Stamps.com enables customers to print U.S. Postal Service–approved postage with just a PC, printer and Internet connection. The company targets its services to small businesses, home offices, and individuals, and currently has partnerships with companies including Auctionwatch, CompUSA, Earthlink, HP, Microsoft, NCR, Office Depot, PayPal and the U.S. Postal Service.

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release may contain forward–looking statements that involve risks and uncertainties. Important factors, including the Company’s ability to complete its products and obtain regulatory approval, which could cause actual results to differ materially from those in the forward–looking statements, are detailed in filings with the Securities and Exchange Commission made from time to time by Stamps.com, including its Annual Report on Form 10–K for the fiscal year ended December 31, 2001, its subsequent Quarterly Reports on Form 10–Q, and its Current Reports on Form 8–K. Stamps.com undertakes no obligation to release publicly any revisions to any forward–looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Stamps.com, the Stamps.com logo and NetStamps are trademarks of Stamps.com Inc. All other brands and names are property of their respective owners.

Stamps.com Investor Contact

Austin Rettig
Investor Relations
(310) 581–7552
http://investor.stamps.com

Public Relations Contact Information

Stephanie Von Allmen
Fitzgerald Communications
(650) 264–1424
svonallmen@fitzgerald.com