Is there ANY way to BLOCK an email address on Gmail?

I've heard of a way to make it go directly to the spam folder, but I don't want this particular person to know that his message went to my address at all. I want him to get back a message that hes been blocked from my address whenever he finishes typing out and sending a message for me. Can it be done? show more I've heard of a way to make it go directly to the spam folder, but I don't want this particular person to know that his message went to my address at all.
I want him to get back a message that hes been blocked from my address whenever he finishes typing out and sending a message for me.

Can it be done?
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