Web-based e-mail service & Mailing List

Web-based e-mail service: An e-mailing service, in which mail is composed, stored, sent from, and received to a computer on the Internet, not a home or office computer. To handle the mail, you use a Web browser, not an e-mail software program. Yahoo! Mail and Hotmail are examples of Web-based e-mail services.

Web beacon: A signal sent from an e-mail message to a Web server telling the Web server to deliver images for the body of an e-mail message. Spammers use Web beacons to determine whether e-mail addresses are active and are therefore capable of receiving spam.