In most postal systems express mail refers to an accelerated delivery service for which the customer pays a surcharge and receives faster delivery. Express mail is a service for domestic and international mail and is in most countries governed by a country's own postal administration. Since 1998 the international accelerated delivery services are governed by the EMS Cooperative.
FedEx Ground is a shipping company that is a subsidiary of the FedEx Corporation. It is headquartered in Moon Township, Pennsylvania, a suburb of Pittsburgh. Originally conceived as a lower cost competitor to UPS, Roadway Package System (RPS) was created to take advantage of new barcode, material handling and computer technologies. After beginning service on March 11, 1985, the company grew, expanding service from its initial coverage of the Mid-Atlantic states, so much so that it eventually became the largest subsidiary of its parent company, Akron-based Roadway Services. By 1996, RPS had achieved 100% coverage of the United States and Canada. In addition, Roadway Services had been reformed as a new holding company called Caliber System, Inc.
In 1997, Fred Smith, founder of FedEx, contacted Dan Sullivan, co-founder of RPS and now president of Caliber Systems, Inc., about merging the two companies. In 2000, FedEx merged the Caliber System, Inc. operating companies into the FedEx organization with Robert's Express becoming FedEx Custom Critical and RPS becoming FedEx Ground. Viking Freight, which initially operated under its original name, was re-branded FedEx Freight in 2001.