STAMPS.COM ELIMINATES THE HASSLE OF USPS® POSTAGE RATE INCREASE AND HELPS CUSTOMERS SAVE

LOS ANGELES – April 18, 2011 – Stamps.com® (Nasdaq:STMP), the leading provider of USPS® postage online and shipping software to approximately 400,000 customers, is pleased to report that its PC Postage software is designed to simultaneously reflect and calculate the new USPS rates effective April 17, 2011. This will allow Stamps.com mailing and shipping customers to conduct business seamlessly as the USPS rate increase takes effect.

As of April 17th, USPS postage rates will increase across a range of denominations. While Priority Mail®, Express Mail® and 1-ounce First-Class Mail® rates will remain the same, Media Mail®, Parcel Post® and several other postage values will be changing. The biggest change is the introduction of Commercial Base prices for First-Class Mail Packages.

Commercial Base pricing offers discounted postage rates to customers who purchase postage online. With the introduction of Commercial Base pricing for First-Class Mail Packages, online postage customers — including Stamps.com users — will now receive discounts up to 8% on First-Class Mail Packages compared to Post Office™ rates. When comparing Commercial Base pricing to Post Office rates, the discounts range from up to 15% on Priority Mail and up to 21% on Express Mail.

“First-Class Mail Packages have always been one of the lowest-cost shipping options for mailers and shippers,” said Stamps.com President and CEO Ken McBride. “The introduction of Commercial Base pricing to First-Class Mail Packages allows Stamps.com customers to see even greater savings. That certainly helps to minimize the impact rate changes have on our customers.”

About Stamps.com
Stamps.com (Nasdaq:STMP) is a leading provider of Internet-based postage services. Stamps.com’s service enables small businesses, high-volume shippers, enterprise shippers, 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.

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.

Stamps.com Investor Contact:
Stamps.com Investor Relations
(310) 482-5830
http://investor.stamps.com

Press Contact:
Eric Nash
Stamps.com
(310) 482-5942
[email protected]