Wat (wie) is snail-mail - definitie
![The first [[airmail]] flight in Germany, 1912.](https://commons.wikimedia.org/wiki/Special:FilePath/Bundesarchiv Bild 183-R36070, Luftpost.jpg?width=200 "The first [[airmail]] flight in Germany, 1912.")
![Union with Greece]] to Egypt in 1914 showing numbered registration label](https://commons.wikimedia.org/wiki/Special:FilePath/CoverCrete1914.jpg?width=200 "Union with Greece]] to Egypt in 1914 showing numbered registration label")
![''Le Philateliste'' by [[François Barraud]] (1929).](https://commons.wikimedia.org/wiki/Special:FilePath/François Barraud - Le Philatéliste.jpg?width=200 "''Le Philateliste'' by [[François Barraud]] (1929).")
![Many early post systems consisted of fixed courier routes. Here, a post house on a postal route in the 19th century [[Finland]]](https://commons.wikimedia.org/wiki/Special:FilePath/Houttakin postitalo.jpg?width=200 "Many early post systems consisted of fixed courier routes. Here, a post house on a postal route in the 19th century [[Finland]]")
!["The Steamboat" – mobile steaming equipment used by Czech [[StB]] for unsticking of envelopes during correspondence surveillance](https://commons.wikimedia.org/wiki/Special:FilePath/IDET2007 StB steam envelope opener.jpg?width=200 "\"The Steamboat\" – mobile steaming equipment used by Czech [[StB]] for unsticking of envelopes during correspondence surveillance")
![First Class]] and Standard Mail delivery.)](https://commons.wikimedia.org/wiki/Special:FilePath/Mailboxes.jpg?width=200 "First Class]] and Standard Mail delivery.)")
![The [[Penny Black]], the world's first postage stamp](https://commons.wikimedia.org/wiki/Special:FilePath/Penny black.jpg?width=200 "The [[Penny Black]], the world's first postage stamp")
![[[Pillar boxes]] on the island of [[Madeira]], Portugal. (1st class mail in blue and 2nd class in red)](https://commons.wikimedia.org/wiki/Special:FilePath/Pillarboxes.jpg?width=200 "[[Pillar boxes]] on the island of [[Madeira]], Portugal. (1st class mail in blue and 2nd class in red)")
![An example of a main post office building in [[Kraków]], [[Poland]]](https://commons.wikimedia.org/wiki/Special:FilePath/Poczta Główna (Main post office) (9159136558).jpg?width=200 "An example of a main post office building in [[Kraków]], [[Poland]]")
![Delivery by bicycle in [[Germany]]](https://commons.wikimedia.org/wiki/Special:FilePath/Post-cycle-Cologne-508.jpg?width=200 "Delivery by bicycle in [[Germany]]")
![[[China]] 4-cent on 100-dollar silver overprint of 1949](https://commons.wikimedia.org/wiki/Special:FilePath/Stamp China 1949 4c on 100 silver ovpt.jpg?width=200 "[[China]] 4-cent on 100-dollar silver overprint of 1949")
![This antique "letter-box" style U.S. mailbox is both on display and in use at the [[Smithsonian Institution Building]].](https://commons.wikimedia.org/wiki/Special:FilePath/US mail letterbox.jpg?width=200 "This antique \"letter-box\" style U.S. mailbox is both on display and in use at the [[Smithsonian Institution Building]].")
Wikipedia
The mail or post is a system for physically transporting postcards, letters, and parcels. A postal service can be private or public, though many governments place restrictions on private systems. Since the mid-19th century, national postal systems have generally been established as a government monopoly, with a fee on the article prepaid. Proof of payment is usually in the form of an adhesive postage stamp, but a postage meter is also used for bulk mailing.
Postal authorities often have functions aside from transporting letters. In some countries, a postal, telegraph and telephone (PTT) service oversees the postal system, in addition to telephone and telegraph systems. Some countries' postal systems allow for savings accounts and handle applications for passports.
The Universal Postal Union (UPU), established in 1874, includes 192 member countries and sets the rules for international mail exchanges as a Specialized Agency of the United Nations.
