The mail or post is a seestem for pheesically transportin documents an ither smaa packages, as well as a name for the postcards, letters, an parcels themselves. A postal service can be private or public, tho mony govrenments place restrictions on private seestems. Syne the mid-19t century naitional postal seestems hae generally been established as govrenment monopolies wi a fee on the airticle prepaid. Proof o payment is eften in the furm o adhesive postage stamps, but postage meters are an aa uised for bulk mailin. Modren private postal seestems are teepically distinguished frae naitional postal agencies bi the names "courier" or "delivery service".
Postal authorities eften hae functions ither than transportin letters. In some kintras, a Postal Telegraph an Telephone (PTT) service owersees the postal seestem as well as havin authority ower telephone an telegraph seestems. Some kintras' postal seestems allae for savins accoonts an haundle applications for passports.
- In Australie, Canadae, an the U.S., "mail" is commonly uised baith for the postal seestem an for the letters, postcards, an parcels it carries; in New Zealand, "post" is mair common for the postal seestem an "mail" for the material delivered; in the UK, "post" prevails in baith senses. However, the Breetish, American, Australian, an Canadian naitional postal services are cried, respectively, the "Royal Mail", the "United States Postal Service", the "Australia Post", an "Canada Post"; in addeetion, such fixed phrases as "post affice" or "junk mail" are foond throughout the Inglis-speakin warld.