Auto-subscribe BP group for first post in BB press thread?

Would it be possible with existing code to make it possible for mods and admins only
to make all users subscribed to the first post in a new BB Press forum thread.
So that it emailed out to all users in the group when posted.

BB press thread should then behave as usual, and have no automatic notifications or subscriptions for the thread from post number two.
Need this functionality somehow for our educational board.

"Push first BB Press post as subscribed email to BP group" could be the name of the plugin..

thanx
j