You can also reply to a message or forward one to another Internet address. In order to send email, you give the Internet address of the recipient, compose or write the message, and then give a command to send it on its way. The message is broken up into packets, each containing the address of the sender and the address of the recipient, and the packets are routed through several sites on the Internet to the destination. The computer systems on the Internet handle the transmission and delivery of the email. Once email arrives at a site, it's put into a system mailbox for an individual user.
Email is a convenient and efficient means of communication.
However, most communication is done by the text of messages, so you have to be considerate and careful to communicate effectively, without misunderstandings. Since you probably have a limited amount of space for your email, be sure to get rid of unwanted or unnecessary email and also be sure to send concise, appropriate messages to others. Email isn't necessarily private. Because it's transmitted electronically, there are several opportunities for someone to read your messages. It's possible to send email to addresses on networks not on the Internet.