Security Deposit Through mail from out of state applicant

[Antonia Rogers]

I have an applicant from out of state and would like to secure a move in date roughly 30 days from now with a security deposit. Everything about this applicant is perfectly fine. However, I have never done this remotely before. I typically have a receipt of security deposit that is signed by both parties that includes the understanding that if the potential tenant does not take possession on the move in date the security deposit is forfeited. 

I suggested Venmo or mail. He prefers by mail. I am thinking of signing and emailing this receipt and requesting that he also sign it, keep a copy and put it in with the check for security deposit. I can add the anticipated move in date etc. to it as well. And then sign the lease on the move in date. 

Thoughts on this path?