My last post in my previous thread:

Oh, what a bummer: all his mail that I signed with "Incorrect address" and put to a letter box has returned to me!

There are no markings that post office has received and sent it again. All the letters look weathered now.

Maybe I'll try to remove the stickers with my address or black it out. I just don't get it. If they saw my address there they must have seen "Incorrect address" too. Why send it to an incorrect address?

I just want his mail gone already. Can I throw it away? I don't want his mail to be my problem anymore.

I sent him:
FYI
Your mail has returned to me.