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 18 countries and territories around the world.

As the world's largest package delivery company, UPS continues to develop the frontiers of logistics, supply chain management, and e-Commerce.

The United States Postal Service is an independent agency of the United States government responsible for providing postal service in the United States.