Stamps.com Reaches 200,000,000th Postage Print Milestone

Company momentum continues in the third quarter

SANTA MONICA, Calif , – September 10, 2003 – Stamps.com (Nasdaq:STMP – News) today announced that it is the first PC Postage® vendor to surpass 200 million all time postage prints, widening its lead as the most popular online postage service. In addition, during the third quarter, the company has continued to experience good momentum including increased acquisition of customers, continued robust sales of NetStamps labels, and good sales of new store items targeted for high–volume mailers and shippers.

“After working hard all last year to dramatically improve our core service offering, we are pleased to see an accelerating trend of usage of our service by our customers,” said Ken McBride, Stamps.com CEO. “Stamps.com’s customers completed the second 100 million postage prints in half the time that it took to reach the first 100 million postage prints.”

During the third quarter, Stamps.com’s new marketing programs have begun to build customer acquisition momentum. New product features, including NetStamps, Shipping Labels and Hidden Postage Labels, are also attracting more high–volume mailers and shippers, leading to increased overall usage of the Stamps.com service.

The Company’s innovative feature NetStamps™ recently celebrated its one year anniversary, and it continues to be the Company’s most popular new product feature. Since NetStamps launched in July 2002, more than 2.5 million sheets of NetStamps labels have been sold. During the summer, Stamps.com introduced its patriotic-themed Liberty NetStamps labels and the labels have been popular with customers. Stamps.com plans to introduce a new holiday-themed NetStamps label during the fourth quarter.

Stamps.com is also expanding and diversifying its store offerings with new products for high–volume users. Stamps.com recently began selling a dedicated postage printer and its associated label rolls, and initial sales have been good. During the fourth quarter the company plans to add additional items to its store that will enhance the convenience and value proposition for its customers.

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 CompUSA, Earthlink, HP, Microsoft, NCR, Office Depot 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, 2002, its subsequent Quarterly Reports on Form 10–Q, and its Current Reports on Form 8–K, if any. 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, NetStamps and Hidden Postage 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