It recognizes as well the us military campaigns. These mailboxes ” US Mail “, the former name of the United States Postal Service (USPS), marking the most remote corners of the United States. The USPS is to the Americans what the National Health Service is the British : the only public service.
The epic mailing was launched in 1775, when the appointment of Benjamin Franklin as postmaster general. It was continued with the Pony Express, during the conquest of the West. It is renewed every day with the 160 million mailboxes served by the 644 000 employees of the USPS. Which is not even a company, but a federal agency, which is the third largest u.s. employer behind Wal-Mart and the armed forces.