What happens to mail that I've set to auto-forward from one Gmail account to another when I mark a message as spam? Does that mark the forwarding account and block it from sending in the future?
I have two Gmail accounts (A and B). I only check A; B forwards all its messages to A. Also, Google knows that B is my second email, so while logged into A I am able to send emails as if they come from B. I didn't enable one-click switch between accounts yet.
Now, sometimes messages which I consider to be spam arrive at B and get forwarded to A.
When I check my email in A, what happens if I mark those messages that got forwarded from B as spam? I am afraid that Gmail will then think that B is unreliable and stop accepting any messages from B after that.
For now, I am always going to B and marking those messages as spam there. In A I just delete them without marking them as spam.