DHL in the context of "United Parcel Service"

Cargo airlines (or air freight carriers, and derivatives of these names) are airlines mainly dedicated to the transport of cargo by air. Some cargo airlines are divisions or subsidiaries of larger passenger airlines.In 2018, airline cargo traffic represented 262,333 million tonne-kilometres with a 49.3% load factor: 52.1% for dedicated cargo operations, and 47.9% within mixed operations (belly freight of passenger airliners).

Dedicated cargo airlines such as FedEx, UPS, and DHL, operate a fleet of cargo aircraft and handle the entire freight transportation process. Many airlines, like Emirates and Qatar Airways, have dedicated cargo divisions that operate their own fleet of cargo aircraft alongside their passenger operations. During the COVID-19 pandemic, airlines like American Airlines, Air Canada, and Delta Air Lines utilized their passenger planes, removing seats to create space for cargo, to meet the demand for freight transport.

Van Gend & Loos was a Dutch distribution company. It was established in 1809, and was purchased by DHL in 2003.

The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas and associated states. It is one of a few government agencies explicitly authorized by the Constitution of the United States. As of March 29, 2024, the USPS has 525,377 career employees and nearly 114,623 pre-career employees.

The USPS has a monopoly on traditional letter delivery within the U.S. and operates under a universal service obligation (USO), both of which are defined across a broad set of legal mandates, which obligate it to provide uniform price and quality across the entirety of its service area. The Post Office has exclusive access to letter boxes marked "U.S. Mail" and personal letterboxes in the U.S., but has to compete against private package delivery services, such as United Parcel Service, FedEx, and DHL.