This forum hasn't had that option since I've been here. If you subscribe to a whole forum you'd have an email every few minutes. It would be simpler to just visit the forum once an hour, or whatever time interval you'd like.

I've seen the subscribe to forum buttons on phpbb forums, but just small ones that weren't very busy. I've never felt like subscribing to one myself though.

Thanks. I guess it does have more value for forums that aren't really busy. I use it in other forums to monitor the forums I'm interested in. They don't even get new posts every day.