LOS ANGELES – June 8, 2010 –® (Nasdaq:STMP), the leading provider of postage online and USPS shipping software solutions for approximately 400,000 customers, today announced its new USPS shipping integration with Zen Cart, the popular open source e-commerce shopping cart software.

With the new integration, Zen Cart users can import customer order data and print shipping labels for all USPS mail classes, domestic or international. Plus will automatically post order status details (tracking number, ship date, mail class) back to the Zen Cart database. has proven to be a valuable tool for many e-commerce merchants, allowing users to manage and fulfill orders from eBay®, Yahoo! Merchant, Google Checkout™, Paypal® Shops plus their own web store, all from one interface.

Additional features include hidden postage, insurance discounts, batch printing and thermal printer support. Plus has a return shipping label feature that allows customers to easily request a pre-paid shipping label for return of merchandise.

“Zen Cart and are a perfect fit,” said president and CEO Ken McBride. “When you combine the flexibility and ease-of-use of Zen Cart with the power and simplicity of the USPS shipping software you have a complete e-commerce solution, from customer order placement to product delivery.”

About (Nasdaq: STMP) is a leading provider of Internet-based postage services.’s service enables small businesses, advanced shippers, 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 PC Postage partnerships with Avery Dennison, Microsoft, HP, Office Depot, USPS and others.

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: This release includes forward-looking statements about our anticipated results and our PhotoStamps spend that involve risks and uncertainties. Important factors, including the Company’s ability to complete and ship its products, maintain desirable economics for 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 year ended December 31, 2008, 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., the logo and PhotoStamps are trademarks or registered trademarks of Inc. All other brands and names are property of their respective owners. Investor Contact: Investor Relations
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