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E-mail (electronic mail) is the exchange (1) of/in computer-stored messages (2) with/by telecommunication. E-mail messages are usually encoded (3) by/in ASCII text. However, you can also send non-text files, such as graphic images and sound files, as attachments sent (4) in/by binary streams. E-mail was one (5) among/of the first uses of the Internet and is still the most popular use. A large percentage (6) in/of the total traffic (7) over/at the Internet is e-mail. E-mail can also be exchanged (8) with/between online service provider users and (9) in/with networks other than the Internet, both public and private.

E-mail can be distributed (10) to/by lists of people as well as (11) to/by individuals. A shared distribution list can be managed (12) for/by using an e-mail reflector. Some mailing lists allow you to subscribe (13) by/to sending a request (14) to/from the mailing list administrator. A mailing list that is administered automatically is called a list server.

E-mail is one (15) among/of the protocols included (16) by/with the Transport Control Protocol/Internet Protocol (TCP/IP) suite (17) of/in protocols. A popular protocol (18) to/for sending e-mail is Simple Mail Transfer Protocol and a popular protocol (19) to/for receiving it is POP3. Both Netscape and Microsoft include an e-mail utility (20) with/for their Web browsers.