A mailing list is a set of email addresses that can get the very same e-mail message at the same time. When an email message is sent out to the particular email address associated with the list, for example – email@example.com, it is redirected automatically to all the email addresses which are added to that list. This option will allow you to contact subscribers with ease, so you can send notifications or any other info on a periodic basis to all of your customers. Based on the software app that is used to administer the list itself, email addresses can be included manually by the list’s administrator or users have to register, giving their approval to receive messages in the future. A mailing list will save you lots of time and will allow you to remain in touch with your customers with ease, which can fortify the popularity of your site.