I just joined the other day and I must have clicked on something somewhere but overnight I got about 50 emails. I wanted to get email on my topics or ones that I reply to but not that many. Can't find where to shut them off. 

Great forum and I really like the format. 

Hi David.

This is the settings for all notifications: https://inkscape.org/alerts/settings/

I believe the one you want to check is the forum subscription https://inkscape.org/alerts/forums.forum_alert/settings/

But you can also check the per topic subscription: https://inkscape.org/alerts/forums.forum_topic_alert/settings/