I have an email account set up, and at one point, everyone started receiving the message “Emails from this address are automated” as a response. I’m not sure where to disable this.
EDIT: It turns out I had another email that was sending from that account, but with a different username (not me@example.com but admin@example.com), and that one had automated emails set up. So, because admin is a shared inbox of me@example.com, even when I received an email, it responded with an automated message. I think this should not happen and is a bug.