San Francisco Chronicle--$1.4 billion. That's how much money the U.S. Postal Service paid FedEx to deliver mail via cargo jets in fiscal 2010. FedEx carries express, priority and first-class mail on its planes, making the company both a partner and rival to the Postal Service. Now that the agency is looking to slash its budget, airfreight is seen as a place to cut. Sending fewer packages by plane could reduce the payments to FedEx by about $400 million a year, according to SJ Consulting Group. Read more!