Hello Pippi,
My only concern would be that in sending that e-mail, you are 'tipping your hand' as we say. Perhaps write everything up, include his e-mails to you about the rental, print the page from the listing site with the date the ad was placed, include the photo you were sent, all of it....and forward it to the court.
If he knows what you know, it may take away some of the impact that you have with the court because he may be able to manipulate the information some how.
Just something to consider....
