On April 2, United Airlines announced it has signed a long-term contract with the U.S. Postal Service (USPS) for the carriage of domestic mail.

United is scheduled to begin carrying domestic mail from April 28, 2007. The agreement extends through Sept. 30, 2011, and is potentially worth up to US$400 million in revenue to United over the life of the contract.

The new contract is in addition to United's current position as the number-one carrier of international mail for the USPS among passenger carriers.

United has carried mail for the U.S. Postal Service since the airline's founding more than 80 years ago. United continued carrying international mail for the USPS after the carrier's previous domestic mail contract ended in June 2006.