Mailing lists can be controlled by a moderator or open to all messages. Mail aliases provide for alternative e-mail addresses for a group or an individual.
Aliases also work as a distribution list to send e-mail.
Group and Mass Mailings E-Mail can be a useful way to communicate with individuals, small groups, and large groups. It is often misused, however, because it is easy to use and perceived to be free. But it isn't free. It consumes resources and shifts costs to different areas. Many people consider it to be intrusive.