My notifications aren't working either. Well, I turned on notifications for the first time in late December as a test and got one. But it would seem that since the forum moved to a new server, they stopped. I've had problems in the past with Craigslist messages not appearing when using Hotmail--not even in Spam--and changing to my Gmail account worked fine.
So, I tried changing my email address on this forum to my Gmail, but I'm still not getting any notifications. I assume I don't need to turn on the "Allow users to email me" option?