With a mailing list, you can send out the same email message to a number of users at the same time. The mailing list is a collection of their email addresses, so if you send a single email to the mailing list’s address, firstname.lastname@example.org – for example, it will be re-sent automatically to all the mailing list subscribers instantaneously. Normally, people need to subscribe to such a mailing list, but occasionally e-mail addresses can be added manually as well, based on the software program that is being used to administer the list itself. You can use the mailing list option to reach potential or active clients and to send them newsletters, new offerings and other kinds of info on a periodic basis. This will prove your desire to keep in touch with them and will boost the popularity of your site.