E-mail (English email, e-mail, from English electronic mail) is a technology and service for sending and receiving electronic messages (called "letters", "e-mails" or "messages") between users of a computer network (including - the Internet).
E-mail on the composition of the elements and the principle of operation practically repeats the system of ordinary (paper) mail, borrowing as terms (mail, letter, envelope, attachment, box, delivery, etc.), and characteristic features - ease of use, delay of message transmission, sufficient reliability And at the same time the lack of a guarantee of delivery.
Advantages of e-mail are: easily perceived and remembered by the person addresses of the form username @ domain-name (for example, [email protected]); The ability to send both plain text and formatted, as well as arbitrary files (text documents, media files, programs, archives, etc.); The independence of the servers (in general they refer to each other directly); Sufficiently high reliability of message delivery; Ease of use by people and programs, high speed of messaging.
Disadvantages of e-mail: the presence of such a phenomenon as spam (mass advertising and virus distribution); Possible delays in message delivery (up to several days); Limits on the size of one message and the total size of messages in the mailbox (personal for users).
Currently, any novice user can start a free email account, just register on one of the Internet portals.