An electronic mailing list is a set of email addresses that can get the exact same email message simultaneously. If an email message is sent to the primary email address associated with the mailing list, for example – firstname.lastname@example.org, it is forwarded automatically to all of the addresses which are included in that list. This option will enable you to reach subscribers quickly, so you can send out newsletters or any other information on a periodic basis to all of your clients. Based on the program that is used to administer the mailing list, addresses can be added manually by the list’s admin or users have to subscribe, giving their permission to receive email messages in the future. A mailing list will spare you lots of time and will allow you to remain in touch with your clients easily, which can boost the popularity of your web site.