An electronic mailing list is a list of email addresses which receive one and the same email simultaneously. When you send an email message to the mailing list address, it will be re-sent to all the email addresses on that list automatically, but none of the receivers will become aware of who the rest of the recipients are. Generally, people have to subscribe to a mailing list, but occasionally mailboxes are included manually without their owners’ consent. Depending on the concrete list administration software, you may also be able to add new mailing list subscribers, so users will not be able to register for your mailing list unless you authorize their signup request. The mailing list option is exceptionally handy in case you wish to send newsletters on a regular basis or some other type of periodic announcements to customers, since you’ll need to send one single e-mail message and all of the subscribers will get it instantaneously. As a result, you will not have to enter a large number of email addresses manually.