Another exciting aspect regarding the E-mail is that you can discover groups of people who share your interests-whether you are inclined toward games, research or astronomy. E-mail provides a mechanism for groups of people who have shared interests to set up and maintain contact. Such interest groups are referred as mailing lists (lists for short). After all they are mailing lists of members e-mail addresses. You can subscribe to any such lists. You will receive copies of every the mail sent to the list. You can also send mail to all of subscribers of the list.