Internet mailing list members are persons that receive bulk emails, such as weekly or monthly newsletters. Based on the software app that’s used to manage a particular mailing list, they may have subscribed personally, giving their explicit approval to be added to the mailing list, or they may have been included manually. The latter suggests that they will technically get unsolicited email messages. Basically, member list subscribers can be managed by the mailing list administrator who can add or delete them, or they can unsubscribe manually in case they do not wish to get emails in the future. All members will always receive one and the same content on the condition that they belong to the same mailing list, but a single subscriber will never be able to see the other mailing list subscribers in the "To" field of the email message.