Stamps.com Launches PhotoStamps for Business

LOS ANGELES – May 17, 2006 – Stamps.com® (Nasdaq: STMP), the leading provider of Internet-based postage services, today announced that it has launched PhotoStamps® for Business, a new feature that will allow businesses to use PhotoStamps to create awareness for their products or services, to build their brand, or for other commercial applications. Stamps.com also announced today the start of the third phase of the market test for PhotoStamps, with an initial authorization for one year through May 16, 2007 and an option for the Postal Service™ to extend the test for a second year.

“We are excited to offer businesses a new way to create awareness for their products and services, and to build their brand by including their logos and images on business mailings,” said Ken McBride, Stamps.com President and CEO. “Our consumer-oriented PhotoStamps service has been a tremendous success, and this is a logical extension of this popular product. We think PhotoStamps for Business will have broad applications from small businesses all the way up to large corporate mailers.”

In addition to the current sheet format, PhotoStamps are now also available in a roll form factor for use in higher volume applications. Individual rolls are available in custom lengths ranging from 250 to 10,000 PhotoStamps, and in denominations ranging from $0.24 for postcard rates to $4.05 for 1 lb packages. To order in high volumes, customers may contact Stamps.com at www.photostamps.com/business. Since the beginning of the second market test in May 2005, more than 14.5 million individual PhotoStamps have been shipped to customers.

About Stamps.com and PhotoStamps

Stamps.com (Nasdaq: STMP) is a leading provider of Internet-based postage services. Stamps.com enables small businesses, enterprises, and consumers to print U.S. Postal Service-approved postage with just a PC, printer and Internet connection, right from their home or office. The Company targets its services to small businesses and home offices, and currently has partnerships with companies including Microsoft, CompUSA, EarthLink, HP, NCR, Office Depot, Vendio and the U.S. Postal Service.

PhotoStamps is a patented Stamps.com product that couples the technology of PC Postage with the simplicity of a web-based image upload and order process. Since launching PhotoStamps for the second market test in May 2005, over 14.5 million individual PhotoStamps have been ordered by the customers. PhotoStamps is currently available under authorization of the U.S. Postal Service for its third phase market test, with an initial authorization for one year through May 16, 2007 and an option for the Postal Service™ to extend the test for a second year.

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release includes forward-looking statements about our anticipated results and available products that involve risks and uncertainties. Important factors, including the Company’s ability to complete and ship its products and obtain or maintain 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, 2005, Quarterly Reports on Form 10-Q, and 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 PhotoStamps are trademarks or registered trademarks of Stamps.com Inc. All other brands and names are property of their respective owners.