Along the same lines, I am contemplating a way to make certain forums that can be accessed by a particular usergroup to ALL be instantly notified via email. BUT........... I want to only send them ONE copy of a message even though they may have either subscribed or autosubscribed by posting a message to a thread.
One way that I have started to approach this is by either maintaining a mailing list address that I add to the forum admin area where you can enter an email address to instantly notify others when new threads or posts are made. OR I have to maintain a string of email addresses separated by spaces to place in same location.
First problem with this approach is as users come and go from list, I have to revist mailing list and/or email list.
Second problem is if they are involved in a thread OR subscribe to a thread, they get killed with email notifications. Not so bad if they only get one per.
Has anyone done this? If not, I would like to collaborate with anyone else that is also interested in this hack.