This occured during the pandemic. We had a new manager hired (not my manager, but a manager who's job sorted crossed over to my work). In one on one emails, she was always rude and short, being sort of vague in describing what she needs. If you dare send a response asking for clarification, she was beyond rude. No one really knew who she was except by name and the department she worked, but it was clear no one liked this person because of how rude she was and she seemed to push her weight around to get what she wants.
One of the other things that really annoyed me about her was her constant forwarding of emails from email lists that she subscribed to, many of which had nothing to do with our work. At least 1 a day at certain times.
Well one day, after constantly receiving these email forwards, I scrolled to the bottom to see if an unsubscribe option was available at the bottom of the email. Sure enough, there it was. I clicked on it, and was happy to see her email address appear in the confirmation window to unsubscribe. So I confirmed, and continued to do this for several weeks. During this time, the forwards became less and less frequent, until it ended completely. I can't say for sure, but I like to think I unsubscribed her from all of her subscriptions and this ended her email forwards !