An electronic mailing list is a list of email addresses that get the same message simultaneously. When you send an email to the mailing list address, it will be redirected to all the addresses on that list automatically, but none of the receivers will learn who the rest of the recipients are. Generally, people have to subscribe to a mailing list, but sometimes email addresses are included manually without their owners’ awareness. Based on the specific mailing list administration software, you may also be able to greenlight new mailing list subscribers, so people cannot subscribe to your mailing list unless you authorize their request. The mailing list functionality is quite handy if you want to send regular newsletters or some other type of regular publications to customers, since you’ll need to send one single e-mail message and all of the subscribers will get it momentarily. This way, you will not have to type in many email addresses manually.