The email address consists of three parts. The first part is "USER", which represents the account number of the user's mailbox; the second part "@" is the separator; the third part is the domain name of the mail receiving server of the user's mailbox. To mark its location.
The operating environment of this article: Windows 7 system, Dell G3 computer.
An email address consists of three parts. What is the first part?
The format of an email address is composed of three parts.
The first part "USER" represents the user mailbox account, which supports a combination of letters, numbers and underscores. For the same mail receiving server, this account must be unique;
Chapter The second part "@" is the delimiter; the third part
is the domain name of the mail receiving server of the user's mailbox, used to mark its location.
The email address is like the letters commonly used by people in real life, including the recipient's name, recipient's address, etc. The structure is: username@mailserver, the username is the login name you use on the host.
What follows @ is the identity (domain name) of the post office’s service computer, which is given by the post office.
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