An electronic mailing list is a list of email addresses that get the exact same email simultaneously. When you send an email message to the mailing list address, your message will be re-sent to all the addresses on that list automatically, but none of the receivers will become aware of who the other recipients are. In the general case, users have to sign up for a mailing list, but sometimes mailboxes are added manually without the permission of their owners. Based on the given mailing list administration software, you may also be able to include new mailing list subscribers, so people cannot join your mailing list unless you okay their signup request. The mailing list option is extremely valuable in case you’d like to send newsletters on a regular basis or some other kind of periodic publications to customers, considering that you’ll need to send out one single e-mail message and all of the mailing list subscribers will get it immediately. This way, you will not have to write lots of mailboxes manually.