Some of the earliest official mail were the messages sent by kings, emperors and other rulers. The
Cursus publicus was the official mail courier (and transportation) system created by the
Roman Emperor,
Augustus. Much later, one of the functions of the
Thurn-und-Taxis-Post postal system was to carry the mail of
Emperor Maximilian I in the
Holy Roman Empire. (
Patrick Hillery) with the oval certifying handstamp
Uaċtarán na hÉireann used in 1979 in addition to the pre-printed harp indicia envelope Official mail stamps are related to the end of
franking privilege that granted certain elected officials of a government the privilege to send mail for free. The person usually signed their name on the mail but it was a highly abused system. In the UK the rules were changed requiring the sender to indicate the date and place of mailing in addition to their signature, but this too was abused and this led, in part, to the introduction of postage stamps. Most governments use envelopes with an indicia indicating its official status; the United Kingdom's official mail most often shows, O.H.M.S. or On His/Her Majesty's Service, the United States uses the silhouette of an eagle,
Ethiopia shows a hand holding a cleft stick with a letter is wedged into it, After the
civil war, the
United States Post Office Department had a large deficit and according to the
Postmaster General's 1869 report 31,933 had the franking privilege at an estimated cost of $5 million, so in 1872 the
Republican party included a proposal to eliminate the free frank as part of their election platform. Between 1873 and 1891, there was no free franking in the USA because special official mail stamps had been issued, but by 1891 free franking had been restored. ==Official mail stamps==