I have sent messages on here to girls but not got a reply. Do they normally reply?

You would be very lucky if you do. One Escort did not reply to me, several months ago. Another one did, recently did.

However, from the point of view of an Escort, all they seek is their deposit (prior to receiving the full payment for their time and company), so they know the client is genuine and not someone into adult chat/emails (as one potential Escort emailed me last-week). From my part, I will not mention her name.

Well girls who aren’t actively on there account generally wouldn’t reply as the active once more ya see

Most don't check email if people responded to their ad so it's best to get ahold of escorts thru their phone by text or call. Just read their ad and see how they prefer you to contact them it will most likely say it in the ad.