I and others on our forum started getting these emails. We reported this and were subsequently informed that this was a bug and that it had been dealt with,
What I found was that many of the boxes on the notifications page here had been ticked on automatically which is why we started getting the emails..
As a quick fix, go to the notifcations page and untick the email boxes on the follows page and rhe settings page:
https://hey.crowdstack.com/member-cp/follows
That should stop all emails. If you still want to be getting emails then instead of doing that, you'll need to untick the various boxes for which you don't want ticked.