I want to block an email, not just send it to spam or other folder. I want the sender to receive a unable to deliever notice so they think my email address no longer exists or they know they are blocked because their email gets bounced back to them. Again, I do not want to just redirect it to a new folder, I want the sender to know I DID NOT receive the email so they will stop sending them. AKA stop stalking me.
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