Just calling this out as we have been getting a lot more active on the forums lately.
If you feel you are getting too many notifications from certain threads (or maybe not enough), then at the bottom of each thread, you can choose at what "level" you get alerts.
You can choose from Muted, Regular, Tracking, and Watching. Each one comes with a brief explanation on how it works.
You can also change your e-mail digest settings and more through your profile. Just click on your avatar icon at the top right, and choose "Preferences". There are several notification choices there too.
Hope this helps!