An electronic mailing list is a list of email addresses that receive the very same email simultaneously. When you send an e-mail message to the mailing list address, your message will be redirected to all the addresses on that mailing list automatically, but none of the receivers will know who the other recipients are. In the general case, one has to subscribe to a list, but sometimes mailboxes are added manually without their owners’ approval. Depending on the given mailing list management software, you may also be able to greenlight new mailing list subscribers, so users will not be able to sign up for your mailing list unless you approve their signup request. The mailing list functionality is quite handy in case you want to send regular newsletters or some other kind of regular announcements to clients, considering that you’ll need to send out one single email message and all the mailing list subscribers will receive it momentarily. As a result, you will not have to enter plenty of mailboxes manually.