E-mail is an electronic information space for network users to communicate through the network e-post office. E-mail has the function of storing and sending and receiving electronic information, and is the most important information exchange tool on the Internet. In the network, the e-mail box can automatically receive the e-mail sent by any e-mail box on the network, and can store electronic files with specified size and other formats. E-mail has a separate network domain name, and its e-mail address is marked after @. You can watch it at any time in the back, information and so on.