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Email, which stands for electronic mail, is a tool used to send text messages between computers and users on the Internet. The key to email is the email address. Each person with an Internet account has such an address. As we have discussed, this address is usually a combination of the userid and the domain name of the computer or system that user's account is on. For example, president@whitehouse.gov is the email address of the US president, and the VP is vicepresident@whitehouse.gov. Georgia Wilson (remember her from earlier in this chapter?) has an address of : gwwilson@klingon.cs.iupui.edu.
Email uses the mail /news protocol. You would generally have a client program to help you with email. These programs are referred to as mail readers or email clients.