New Hidden Postage™ Feature Enables Businesses, e–commerce Sites and Online Auctioneers to Ship More Successfully

SANTA MONICA, Calif. &ndash ;May 13, 2003 – Stamps.com™ (Nasdaq: STMP) announced today that it has added a new shipping capability called Hidden Postage™ to its service. The new feature enhances the Stamps.com service, resulting in a more powerful shipping solution for businesses, e–commerce sites and online auctioneers. Hidden Postage allows Stamps.com customers to print a shipping label without printing the actual value of the postage on the label.

“The cost of fulfilling an order involves not only postage–but also packaging, labor and handling. By hiding the postage amount of the shipment, businesses can more easily cover their full shipping and handling costs without causing customer complaints,” said Kyle Huebner, Vice President of Marketing and Strategy. “Hidden Postage increases the value proposition of our service and enables us to better target new shipping customers.”

The Hidden Postage feature is an advantage that PC Postage® customers have over traditional meter users and retail post office customers, since neither can print shipping labels without showing the postage cost. Prior to the advent of the Hidden Postage capability in PC Postage technology, businesses had to turn to shippers such as UPS or FedEx for this functionality.

With the new Hidden Postage feature, Stamps.com customers have the option of printing shipping labels either with or without the postage value displayed. Stamps.com shipping labels are printed on 8 ½” x 11” plain paper or labels. Customers save money with discounted electronic Delivery Confirmation™ or Signature Confirmation™ service and can check the delivery status of the package online. The Hidden Postage feature is currently available to Power Plan™ customers only.

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 1–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 occurance 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