Up above beside the search box it says "Notification". If you click on that you can adjust what email notifications you receive.

Good idea BUT there is so much crossover that if i eliminate a category I will likely eliminate a post that I'm interested in reading. How about a daily digest (even twice daily if wanted) so that individual posts are gathered into a single email for a specified period of time. I got so much GCU email this morning that my whole screen was filled. This hinders me in finding other important emails. Another idea.... how about a section for "help requests" only and one for site updates/tutorials. And one for "chatter". I don't want to eliminate the notifications entirely (because some are very useful) but may have to if I am inundated every day like I was today.