I manage a phpBB forum for my family. It's been great for keeping in touch, especially since we have family all over the world. (Instant messaging isn't so great for keeping in touch with people who are typically asleep when you're awake and vice-versa.) Since it's just a family board, we have a small number of members (probably no more than 20 if we get everybody on board), so I'd really like to find a mod for it that will auto-subscribe all forum members to new threads when they're posted. I've searched through the mods at phpBB.com, and while there are a number that modify how subscriptions work, I'm not seeing any that all the functionality that I'm looking for. Maybe I'm not putting in the correct magic combination of search terms. :)

Does such a thing exist? I would be capable of programming it myself if needed, but it's been a long time since I did any serious PHP work and I feel no need to reinvent the wheel if an existing mod will do the job.