How do I stop Firefox e-mails?.....all of them forever?
No more emails..............
- User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
If they are from Mozilla, there should be a link near the bottom of the message to unsubscribe or whatever.
Could it be that you subscribed to the Mozilla Newsletter (and maybe forgot about it) ?
As long as the sender's email address is :
@mozilla.org or @e.mozilla.org - at least it's legit, and you should be able to unsubscribe like FredMcD mentioned.