As a reader discovered, UPS takes 20% off ground shipments via coupon code "EASY". Plus, the same coupon takes 40% off domestic air shipments, standard shipping to Canada and Mexico, and UPS WorldWide Services. That's the second such coupon we've seen from UPS and a great opportunity to save on holiday shipments to family and friends. Some exclusions may apply; click here for more information. Deal ends January 31.