An electronic mailing list is a list of email addresses which receive the exact same message simultaneously. When you send an email message to the mailing list address, your message will be forwarded to all the addresses on that mailing list automatically, but none of the receivers will see the other recipients. In the general case, people have to register for a list, but sometimes email addresses are included manually without the awareness of their owners. Based on the particular list management software, you may also be able to add new subscribers, so users cannot join a mailing list unless you authorize their signup request. The mailing list functionality is extremely handy in case you want to send newsletters on a regular basis or some other sort of periodic publications to clients, considering that you’ll have to send out just a single e-mail and all of the mailing list subscribers will get it immediately. As a result, you will not need to type in a large number of email addresses manually.