LOS ANGELES, CA–(Marketwire – Apr 20, 2011) – Stamps.com ® ( NASDAQ : STMP ), the leading provider of USPS® postage online and shipping software to approximately 400,000 customers, today announced an invitation to join the Stamps.com First Quarter 2011 Financial Results Conference Call. The call will take place Thursday, April 28, 2011 at 5:00 pm ET and will be webcast from our Investor …
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