Stamps.com Announces 111% Growth in High Volume Shipping Revenue and Further Enhances Its Shipping Product Capabilities

LOS ANGELES, CA — (Marketwire) — 08/01/11 — Stamps.com® (NASDAQ: STMP), the leading provider of USPS® and to approximately 400,000 customers, today announced that it recently introduced PC Postage Version 8.9 software which includes new features to help e-commerce sellers and high volume shippers save money. The new Version 8.9 software adds to an already powerful suite of Stamps.com shipping software that led to a 111% growth in Stamps.com-s total high volume shipping postage prin