Stamps.com Launches PhotoStamps for Mac OS X version 10.4 “Tiger”

WWDC, SAN FRANCISCO, CA — June 8, 2005 — Stamps.com (Nasdaq: STMP), a leading provider of Internet-based postage services, today announced the launch of PhotoStamps for Mac. PhotoStamps, the popular form of postage that lets consumers turn their digital photos, designs or images into valid U.S. postage, is now available as a stand alone application that seamlessly integrates the design and order process with images in the users’ iPhoto libraries. The application will be available later this month at www.photostamps.com.

“Tiger and its development tools are incredibly advanced, allowing us to easily create the integration,” said Stamps.com President and CEO Ken McBride. “Mac users are innovative and design-oriented, making them the ideal target for PhotoStamps. We are excited to offer Mac users new customization options for this popular product.”

“The hundreds of new features in Tiger are changing the way people use the computer,” said Ron Okamoto, Apple’s vice president of Worldwide Developer Relations. “We’re thrilled to see Stamps.com utilize the power and innovation of Tiger to provide Mac users with the ability to create highly customized PhotoStamps.”

PhotoStamps for Mac offers advanced features, including unlimited color options for borders. Tiger users will have additional image effects that they can apply to the photo. People can use PhotoStamps to create customized postage with pictures of their children, pets, vacations, celebrations and more. PhotoStamps can be used as regular postage to send letters, postcards or packages and are currently available for the most common mail rates in denominations ranging from $0.23 to $3.85. Each sheet includes 20 individual PhotoStamps.

Ordering PhotoStamps is easy. Consumers simply upload a digital photograph or image file, customize the look and feel by choosing from thousands of border colors to complement the image, select the value of postage and place the order. The interface is fun, functional and incredibly easy-to-use.

About Stamps.com and PhotoStamps

Stamps.com (Nasdaq: STMP) is a leading provider of Internet-based postage services. Stamps.com enables over 375,000 customers 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. PhotoStamps was extremely popular during the initial market test which was announced on Aug. 10, and ran through Sept. 30, 2004. During that 7 1/2 week period, more than 2.75 million individual PhotoStamps were ordered. PhotoStamps is expected to be available under authorization of the U.S. Postal Service for a second, year-long market test beginning May 17, 2005.

“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, 2004, 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.