There is more control with a private list. Usually the information contained there is private and can be accessed only by members of the list. Occasionally, lists are moderated. Postings must go through a moderator who will screen, modify, and post the messages to the group. At this time, NFPA does not offer these features.
Every list has a slightly different way to subscribe.
You may receive an invitation to join a group by referral from a friend or acquaintance. You may find a group that you would like to join by searching on the Internet and finding an interest group. Most of the listservs are for NFPA members only, so your membership status will be verified prior to approval. Once you join a group, you are generally sent a confirmation with information and passwords for your membership. It is wise to save this in a special file, as you may need to refer to it from time to time to subscribe, unsubscribe, or e-mail the list manager.