Originally known as the American Messenger Company, UPS has grown to become a Fortune 500 company and one of the largest shipping couriers in the world. UPS is an American multinational shipping and receiving and supply chain management company that was established in 1907.1 Today, UPS is mostly known for its ground shipping services and the UPS Store, a retail chain that helps UPS shipments and gives small businesses tools. Additionally, UPS offers overnight or two-day air shipping and delivers packages to post office boxes via UPS SurePost, a subsidiary that forwards packages to the USPS for last-mile delivery.

Based on preliminary statistics from ACI, UPS' main international hub, UPS Worldport in Louisville, Kentucky, is the fifth busiest airport in the world by cargo traffic and the third busiest in the United States, behind FedEx's Memphis Superhub and Ted Stevens Anchorage International Airport.[10] UPS is the largest courier company in the world by revenue, with annual revenues of approximately US$85 billion in 2020.