Access Control Groups to completely control access to each discussion area. Server-side Scripting Language Can be used to customise the user interface to match your site, and to have things work exactly the way you want them to work. Mailing lists come in all shapes and sizes. There are more than 20 different list management programs, each with its own features and quirks. The most common type of mailing list is the discussion or talk list, in which every subscriber can post messages to the entire list.
Discussion lists foster conversation among subscribers.
Most mailing lists have an open subscription list, which means that anyone with a valid email address can join. If you prefer to restrict your list s membership to a specific group of people, you may choose a closed subscription list, where all subscription requests come to you for approval. In an unmoderated list, posts are immediately sent to all members of the list. Moderated lists generally have less static than unmoderated lists, since off-topic or inappropriate information rarely makes it past the moderator. However, if the moderation is too restrictive or takes several days to forward subscribers posts, the list will lose its spontaneous appeal.