E-mail(electronic mail ) uses computers for communication. It has several important advantages over phones and regular mail. The main advantage of e-mail is that it takes very little time to send and receive messages. From your computer, you can contact people far away (or in the next office). Seconds later, they have your message. If they are at their computer, you can get a response instantly, too. Another reason people like to use e-mail is that for just a few cents you can send a message to someone in another part of the world. In addition, you don't have to worry about the time difference, and your friends or colleagues can send a response at their convenience. Last, e-mail allows you to send a single message to many people at the same time.