Electronic Mail (EMail) is a way of sending a message from one computer user to another, via a computer service*. In EMail, the sender sends a message to a computer service and tells that service where to send the message. The computer service then delivers the message to the correct electronic mailbox. Then the addressee reads the message.
At first, EMail might sound like something out of “Star Wars,” but, in many ways, it is similar to sending a letter by regular mail.
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What is Electronic Mail?
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A “computer service” is an information service that offers electronic mail as one of its services. It has a centralized computer that is reachable through nodes throughout the world.