E-mail (e-mail), -mail: basic concepts and terms...

E-mail (e-mail)

-mail: Basic concepts and terms

Email (English electronic mail , or e-mail ) is an electronic message sent from one computer to another. An electronic mail message (e-mail) is usually in text form, but it can also contain applications (English attachment ) files of any format: formatted text (prepared in the text editor Word, OpenOfficeWriter , etc.), graphic file, computer presentation, spreadsheets, etc. Since the cost of sending messages by e-mail is negligible, and the message itself can be delivered to the addressee almost immediately after it was sent by the author, this means of communication on the Internet immediately became very popular and remains to this day the most demanded telecommunications network service.

The principle of work of e-mail is similar to the principle of the usual traditional mail service. The user creates his e-mail in one of the e-mail programs available to him, specifies the e-mail address of the recipient, the subject of the message, and presses the Send button (how he throws the letter in the mailbox). Almost immediately, this file is sent to the mail server that serves the email address of the sender of the message, and then moves across the Web to the Internet server where the email address of the recipient is registered (similar to how in the real world the letter travels from one post office to another to another). Here, the email is stored until the email recipient activates his email program (he can do this on his personal computer, as well as on any other computer on which the e-mail program is installed), after which the e-mail falls into the incoming correspondence of the user's mail program (ie, falls into his mailbox). The whole process of sending e-mails takes several minutes, regardless of the geographic location of the author of the electronic message and his addressee.

At the moment, e-mail messages can be exchanged in two ways: by using specialized mail programs that are installed on the user's computer (for example, Outlook Express) , and through special web-sites of Internet mail (for example, mail.ru; list.ru; hotmail.com, gmail.com, etc.). Such a mail service is also provided by most major search engines - "Yandex" (yandex.ru), Rambler (rambler.ru), etc. To work with Internet mail services, it is enough to register on any of the web-sites of Internet mail, i.e. receive your e-mail address (it will be generated on the basis of a user-registered account, or a user account ( account )) (user ID > identifier )) and an access password (English password ) to personal e-mail space (your virtual mailbox).

The email address on the Internet corresponds to the standard structure of the email address, which consists of two parts separated by an @ sign (the so-called dog, or commercial at, English at-commercial, axon sign) (Figure 6.4).

The sign of email (at-commercial, dog)

Fig. 6.4. The sign of the email ( at-commercial, dog)

For reference

Origin of the "dog" icon. For the first time, the use of the @ symbol to designate e-mail was suggested by programmer Ray Tomlinson. In November 1971, he used it, sending the world's first e-mail on a new, invented standard. Although the e-mail itself existed before Tomlinson, he was the first to suggest that this is the @ sign for separating the address of the recipient of the e-mail message of the recipient's e-mail address and the domain name in which the mail server serving the mailing address is located. It is believed that Tomlinson chose such a sign because of one of the meanings of the English preposition at, namely, an indication of the location of an object. Therefore, the sequence '); document.write (addy82408); document.write ('<\/a>'); // -> \ n '); // -> This e-mail address is being protected from spambots. You need JavaScript enabled to view it '); // -> should be read as somebody on example.com (someone on example.com ) .

The text before the @ sign is generated by the user of the e-mail at his discretion, and the text after this sign corresponds to the name of the e-mail server on which the electronic "mailbox" is registered. the user. For example, the name of the mail server of the philological faculty of the Moscow State University. M. V. Lomonosov - philol.msu.ru, so the postal addresses of the administrative services and individual employees registered on it look like: '); document.write (addy18695); document.write ('<\/a>'); // -> \ n '); // -> This e-mail address is being protected from spambots. You need JavaScript enabled to view it '); // -> , '); document.write (addy76982); document.write ('<\/a>'); // -> \ n '); // -> This e-mail address is being protected from spambots. You need JavaScript enabled to view it '); // -> , etc. In the event that a user opens a virtual mailbox on one of the e-mail web servers, i. E. is going to use Internet mail, then the character sequence (letters and (or) digits) that is before the @ sign will be identical to the user registered account, and the alphabetic sequence after the @ sign is determined by the web server of e-mail that the client wants to use (an example of an e-mail address mail on the Internet: '); document.write (addy30061); document.write ('<\/a>'); // -> \ n '); // -> This e-mail address is being protected from spambots. You need JavaScript enabled to view it '); // -> ). The text that is in the e-mail address after the @ sign is similar to the web address of the e-mail server, so the structure of this part of the e-mail address is identical to the structure of the standard Internet address of the web page (ie its URL). It can contain information about the country in which this service operates ( ru - Russia) or about the direction of the company that provides e-mail services ( cell >

All Internet mail services are free, but in this case the user may have a limited amount of virtual mailbox, so he will be recommended to regularly clean his mail space, i.e. delete obsolete, irrelevant and unnecessary correspondence. If the contents of the user's mailbox have exhausted the limit allocated for it, new messages will cease to be delivered to it, which in this case simply disappear. You can increase the volume of your virtual mailbox by paying the amount that the owner of the mail web site determines.

The structure of the electronic message also copies the structure of the traditional postal item: each e-mail has a field reserved for official information (the so-called header, English header ) and a text field letters (the so-called body of the letter, English body - main, the main part of something). The address of the recipient (or several recipients, if the e-mail is to be sent to several addressees at once), the subject of the letter (a brief description of the contents of the electronic message) and the mail address of the sender of the letter are entered in the service field. Thus, the recipient of the electronic message immediately sees who sent the letter to whom it was sent and what type of information it contains. Since electronic correspondence is potentially open information (that is, it can be intercepted and read by third parties or the recipient was redirected by negligence to other people), it is necessary to carefully compile the text of the letter, bearing in mind these features of the electronic communication process. In case you want to keep the message confidential, different encryption programs are used.

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