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 use solutions for online sellers. ShipWorks solutions integrate with over 50 popular online sales and marketplace systems including eBay, PayPal, Amazon, Yahoo! and others. ShipWorks offers multi-carrier shipping options and features including sending email notifications to buyers, updating online order status, generating reports and many more.

“The acquisition of ShipWorks represents another strategic investment in our high volume and e-commerce shipping business,” said Ken McBride, Stamps.com chairman and CEO. “E-commerce driven package shipping is a very attractive segment within the mailing and shipping space and this acquisition further leverages our ability to accelerate our growth in this area.”

“We’re very excited to become a part of Stamps.com,” said Wes Clayton, ShipWorks Co-General Manager and COO. “We’ve long enjoyed a strong partnership with Stamps.com and with the acquisition we look forward to continuing to build the ShipWorks business with the support of the Stamps.com team.”

“The Stamps.com acquisition represents a great opportunity for the ShipWorks team and our customers,” said Brian Nottingham, ShipWorks Co-General Manager and CTO. “We’ve built a great company and believe that we can leverage that success into even better products and services for our customers working alongside the Stamps.com team.”

Stamps.com purchased ShipWorks for approximately $22 million in cash. Stamps.com plans for ShipWorks to operate as an independent, wholly-owned subsidiary, led by the existing management team