We both tried (and failed) to hail a cab on 8th Ave during the downpour, then laughed about our soaked shoes. You disappeared into the nearest bodega before I could offer to split an umbrella. Still thinking about that shared moment in the storm.
Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement.
No serious private advertisers ask for a down payment before you meet.
Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.