The Listing Service Distribute protocol (Distribute) handles interactive forums that communicate using email messages. You must have a valid email address to participate, and although you do not need the ability to send email, you must be able to receive. Distribute differs from regular bulk emailings, in that if you want to send a group message, you do not have to know all of the email addresses for the recipients. You simply mail the Distribute server and the server handles distribution to everyone signed up for the mailing list (this also insures privacy, as the forum members who do not send messages are invisible to others in the forum). The vast majority of distribution lists are administered by L-Soft, and so the protocol itself is often referred to as "ListServ". Below is a link to an official service that tracks public Distribute mailing lists you can join.