Mail, or post, is a system for transporting letters and other tangible objects: written documents, typically enclosed in envelopes, and also small packages are delivered to destinations around the world. Anything sent through the postal system is called mail or post.

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 government monopolies with a fee on the article prepaid. Proof of payment is often in the form of adhesive postage stamps, but postage meters are also used for bulk mailing.

Postal authorities often have functions other than transporting letters. In some countries, a Postal Telegraph and Telephone (PTT) service oversees the postal system as well as having authority over telephone and telegraph systems. Some countries' postal systems allow for savings accounts and handle applications for passports.

Read more about Mail:  Early Postal Systems, Etymology, Modern Mail

Other articles related to "mail":

Return Address
... In postal mail, a return address is an explicit inclusion of the address of the person sending the message ... The return address is not required on postal mail ... Such mail may thus become dead letter mail ...
... DomainKeys is an e-mail authentication system designed to verify the DNS domain of an e-mail sender and the message integrity ... specification has adopted aspects of Identified Internet Mail to create an enhanced protocol called DomainKeys Identified Mail (DKIM) ...
Postcode Address File
... is used as a routing instruction by Royal Mail staff to sort and deliver mail quickly and accurately ... The PAF is a collection of over 29 million Royal Mail postal addresses and UK postcodes ... As owner of the PAF, Royal Mail is required by section 116 of the Postal Services Act 2000 to maintain the data and make it available on reasonable terms ...
Types of Mail - Other Mail Services
... Larger envelopes are also sent through the mail ... that might be found in biological materials or mail bombs ... Many magazines are simply placed in the mail normally (but in the U.S ...
Ray Tomlinson
... It was the first system able to send mail between users on different hosts connected to the ARPAnet ... (Previously, mail could be sent only to others who used the same computer.) To achieve this, he used the @ sign to separate the user from their machine, which has been used in email addresses ever since ... The first email Tomlinson sent was a test e-mail ...

Famous quotes containing the word mail:

    The mail from Tunis, probably,
    An easy Morning’s Ride—
    Emily Dickinson (1830–1886)

    We grew up founding our dreams on the infinite promise of American advertising. I still believe that one can learn to play the piano by mail and that mud will give you a perfect complexion.
    Zelda Fitzgerald (1900–1948)

    Always polite, fastidiously dressed in a linen duster and mask, he used to leave behind facetious rhymes signed “Black Bart, Po—8,” in mail and express boxes after he had finished rifling them.
    —For the State of California, U.S. public relief program (1935-1943)