I agree with Woody.....if I received a PM/txt from a provider I had seen telling me she had a great time and would enjoy seeing me again, I would remember it for a long time; assuming I too had a great time, I would likely return for a follow-up date in short-order.
I get it many guy's don't want any communication initiated by the provider for various reasons that all make sense.....but not me.
If I were one of a provider's fav's, I would want to know. I think a provider's direct marketing initiatives, if done correctly, have great potential with select clients. Endless "perks" she could extend beyond of price to instill loyalty. I like to know my business is appreciated and like knowing she really wants me to come back. Rarely happens for me....but feels great when it does.