Electronic mailbox refers to the network to provide users with the exchange of electronic information space, both for the user to provide the function of sending e-mail, but also automatically for the user to receive e-mail, but also can be sent and received mail storage, but in the storage of mail, electronic mailboxes on the size of the mail there are strict regulations.

The biggest feature of e-mail is that people can receive and send letters at any place and time, which solves the limitation of time and space and greatly improves the efficiency of work, and provides great convenience for office automation and business activities.

Mail composition:

A complete e-mail has two basic parts: the letter header and the letter body.

The header generally has the following parts:

1, the recipient, that is, the recipient's e-mail address;

2, cc, that at the same time you can receive the e-mail of other people's e-mail address, there can be more than one;

3, the subject, is a general description of the content of the e-mail, can be a word, can also be a sentence. It is self-developed by the sender of the letter.

The body of the letter is the content of the letter that you want the recipient to see, sometimes the body of the letter can also contain attachments. Attachment is contained in a letter in one or more computer files, attachments can be separated from the letter, become an independent computer file.