The USPS–UPS package delivery contract refers to long-standing agreements where UPS transports mail and packages for the U.S. Postal Service, mainly through air and ground logistics. These contracts do not usually have a single public “end date” because they are renewed periodically under negotiated terms, with major agreements historically extending for several years at a time. Any changes or endings typically happen quietly through renewals, renegotiations, or shifts in service scope rather than a sudden contract termination.