Guess what? Yet another email to a Sean Conner that isn't me

I received yet another email for Sean Conner, this time an invoice for several art pieces (for quite a bit of money) from a gallery in Colorado being sent to a house in Dallas, Texas. Given that I only have the address of the recipient in Dallas, I decided I should write this Sean Conner a letter (old school, on paper, with pen, send via snail mail, just a few minutes ago) informing him of the mistake and an offer to forward him the invoice if he so wishes. I do hope he responds and I get to know his actual email address so I can figure out if he thought his email address was actually “seanconner@gmail.com”; it was a transcription error and it should have been something like “seangconner@gmail.com”; his email address is something like “seanconner@example.com” and Gmail handles his email at this domain (so it's a Gmail bug); he doesn't have an email address and just made it up on the spot; he messing with me (I seriously doubt this one). I don't have high hopes though. I mean, what…