Getting Post Notifications of Threads I'm Not Subscribed To or Participated In?

I’ve been getting email notifications of brand new posts that seem to be from one particular poster and occasionally from other posts that I have not participated in or even looked at. These email notifications are a nuisance as I don’t know if they are a response to something that I may have. Can these be stopped? Is it a setting the poster has to send a global notification when they make a post?

Most notifications have come from this poster…

I think I see what happened.

Go here: Midi Maestro - Singular Sound Forum

then look at the bell icon on the top right:

Is that set to normal or something else? If it’s not set to normal, set it to normal and that should fix the issue.