Stamps.Com Lands Deal With UPS, Stock Shoots More Than 15% Higher In After-Hours Trading Inc. shares jumped more than 15% in after-hours trading Monday following the announcement of a deal with United Parcel Service Inc. 

The arrangement gives users of’s at-home printing services discounted shipping rates as part of a new Digital Access Program for UPS. It was part of a broad range of new partnerships and tech initiatives that UPS announced after the markets closed Monday. “This new collaboration with UPS will make UPS shipping services available to’s customers at attractive discounts of up to 55 percent off daily rates, including various waived surcharges,” UPS stated in its announcement.