This List Type is designed for mailing lists that publish announcements to the public. Information tends to flow one way, as opposed to a discussion group, but unlike the Announce Only List Type which is also a one way List Type, the Newsletter is open to public submissions, sending all posts to moderators. In this way it is like the Moderated Public Discussion, and in fact, these List Types have identical configurations.

The reason that there are two essentially identical List Types is that List Types need to be named in a way that makes it obvious how they should be used, and this kind of configuration can serve two very different use cases. A discussion list is likely to be moderated by users who are participating in the discussion whereas a newsletter is often moderated by administrators or the marketing team. The newsletter will have a few key people posting most of the information that is going to be published through the list, such as members of the organization's marketing team, plus a smattering of information submitted by other contributors. The moderation strategy will be to accept posts from core contributors then cherry pick contributions from people outside this group.

The moderated public discussion will be more inclusive, accepting messages from a larger pool of contributors and providing more of a mix. The moderation strategy will be to review and include as many messages as time allows.

This List Type uses the -mOU combination in the ezmlm-make argument string so that anyone can submit posts for moderation, but all posts are moderated. Every post sent to the list is forwarded to the moderation queue unless the sender is on the Deny Subscriber List.

The Newsletter List Type allows anyone to subscribe directly. Lists based on this type accept public subscription requests and allow the public to access the archives via ezmlm address commands.