EL SEGUNDO, Calif. – October 20, 2014 – Stamps.com® (Nasdaq:STMP), the leading provider of USPS postage online to over 500,000 customers, today announced the acquisition of ShipWorks®, based in St. Louis, Missouri, which offers monthly subscription based e-commerce shipping software. ShipWorks is a leading client-based shipping software company that provides simple, powerful and easy to […]