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•Many Internet Web sites provide free e-mail addresses and accounts for registered users.
•Companies can provide free e-mail because of advertising messages displayed on their websites.
•Links to other available services may also be offered on the website of a Web-based E-mail service.
•E-mail messages sent from Web-based mail accounts might also contain some sort of advertisement, such as a promotional message or a link to the Web-based e-mail service.
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