is usps and ups the same thing are two separate entities that provide mail and package delivery services, but they operate differently. USPS, or the United States Postal Service, is a government-run service that offers both domestic and international mail and package delivery. UPS (United Parcel Service) is a private company known for its global shipping services, with a focus on package delivery, logistics, and supply chain solutions. While both services offer similar shipping options, UPS tends to be more expensive for international deliveries, while USPS is more cost-effective for lighter, smaller packages.