STAMPS.COM PARTNERS WITH HEWLETT-PACKARD TO BUNDLE INTERNET POSTAGE SOFTWARE ON HP PRINTERS

HP Named Stamps.com as Strategic Partner for Company’s New E-Services Strategy

SANTA MONICA, Calif – April 20, 2000 – Stamps.com™ (Nasdaq: STMP), the leading provider of Internet mailing and shipping services, today announced an expansion of its alliance with HP, which was established earlier this year. Stamps.com’s Internet Postage™ software will now be bundled on select Hewlett-Packard (NYSE: HP) personal LaserJet and workgroup LaserJet printers beginning in June. Stamps.com software is already bundled on HP’s all-in-one inkjet printers that began selling in stores this month.

“Stamps.com’s service coupled with HP’s LaserJet and DeskJet printers will introduce a new way for small business owners to maximize their mailing and shipping process, in one easy step,” said Carolyn Ticknor, president of HP Imaging and Printing Systems. “Through this growing relationship, we now offer our customers an integrated service that will save money, is easy to use and creates an efficient mail system for individual business needs.”

Stamps.com and HP formed its existing relationship last January. Stamps.com is currently present on the HP Small Business site (www.hp.com/smallbusiness) and on HP’s All-in-One Solution Center, as well as several other links within the HP site. Stamps.com also has a relationship with HP’s Consumer Business organization and will be launching programs later this year that promote Stamps.com and HP supplies.

Stamps.com Chairman and CEO John Payne said, “This relationship allows Stamps.com to leverage HP’s leading printing technology with our state-of-the-art Internet Postage solution. With more than 120 million HP printers in the marketplace, HP leads the printing market and is the key catalyst for growing e-services in the printing marketplace. For Stamps.com this alliance is the marriage of two leading brands that brings great value to our small business customers.”

Yesterday, HP unveiled Stamps.com as a leading partner in its e-services strategy, propelling the company’s overall e-services strategy into the printing and imaging market, which will transform printers into Internet-based services by combining the power of the Internet with imaging and printing developments. The announcement was made at a media event hosted by HP Chief Executive Officer Carly Fiornia. Stamps.com was featured among other new printing and imaging-focused Internet business models as well as revolutionary technologies with which HP is aligning. Other companies featured at the event include Federal Express, ImageTag, Mimeo.com, NewspaperDirect and PrintCafe.

About Stamps.com

Stamps.com™ is the easiest, smartest way to mail or ship letters, packages or small parcels anywhere and at anytime. Anchored by its partnerships with the U.S. Postal Service and United Parcel Service (UPS), Stamps.com has three customer-centric business units focused on providing its unique Internet mailing and shipping solutions to small businesses, large corporations and e-commerce companies. Stamps.com’s services allow any size business to choose the best carrier, cost and delivery terms for every mailing or shipping transaction based on sophisticated, real-time rating, tracking and pricing tools.

Stamps.com has strategic partnerships with major companies such as America Online, eBay, Hewlett-Packard, IBM, Intel, Mail Boxes Etc., Microsoft, Office Depot, Intuit and 3M. Visit sdcmainprod.wpengine.com for more information.

“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, 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 fiscal year ended December 31, 1999. 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, the Price It, Ship It, and Sell It logos are trademarks of Stamps.com Inc. All other brands and names are property of their respective owners.