Abstract: E-mail format consists of three parts: title, text and signature area. E-mail is a way of communication based on computer network. Computer users can use the network to send e-mails and communicate with each other. E-mail can be carried out on a computer local area network or a computer wide area network. E-mail has certain format. Take the Internet e-mail format widely used in the world as an example. It consists of three parts: title, text and signature area. Recipient: the address of the e-mail recipient Sender: the address of the e-mail sender Subject: the subject of the e-mail content: the content of the e-mail end signature signature area