DHL commits its expertise in international express, air and ocean freight, road and rail transportation, contract logistics and international mail services to its customers.

FedEx Express provides fast and reliable delivery to every U.S. address and to more than 220 countries and territories around the world. FedEx uses a global air-and-ground network to speed delivery of time-sensitive shipments, usually in one to two business days with the delivery time guaranteed.

As the world's largest package delivery company and a leading global provider of specialized transportation and logistics services, UPS continues to develop the frontiers of logistics, supply chain management, and e-Commerce . . . combining the flows of goods, information, and funds.

The United States Postal Service (also known as USPS, the Post Office or U.S. Mail) is an independent agency of the United States government responsible for providing postal service in the United States. It is one of the few government agencies explicitly authorized by the United States Constitution.