Have any of you successfully answered questions from potential buyers and had a response back?

You are posting your question on the wrong part of the site !

E-mail is a very poor way to sell a car and you will almost never get a response. It is far better to use the telephone. To answer your question the last couple of cars I sold were made with the initial contact by e-mail, followed up by telephone calls and then a test drive.

I have it listed here, on cargurus and the communication is set up for email.

E-mail sometimes is good and sometimes not.

A couple of things come to mind when looking at your vehicle that is posted for sale here. Number 1, it may be overpriced and number 2, vehicles North of $70 large may not draw much interest cause most of us, except for "Rowefast" can not afford a vehicle in that price range. Your interested buyers will be extremely limited in number.