For perhaps the 4th time in my P4P career, i just received an unsolicited email from a provider. This is not someone I recall seeing; her pictures are blurred, and neither the name nor the body are ringing a bell. Perhaps I saw her so long ago she's just faded from memory. And she has no reviews (at least not under her current name).

Most of the ladies I've seen use email and switch to text the day of the appointment or so.

I think that some ladies that use assistants, the assistant keeps and uses email lists to market and advertise other girls they may be working for. I have had girls email me when I knew fact certain I never contacted them.  I think this practice is a bit unprofessional but it never really bothered me. I am also not 100% I am correct as it's just an assumption on my part but I cant think of another reason for it to happen.

This has happened to me too.   Three providers contacted me "out of the blue".  I tried to see one, but that turned out to be a clusterfuck.  Just couldn't make the logistics work.   The second one turned out to be an absolute gem.  I didn't see her for a year, after her first email message, but after I met her, I was totally happy she reached out to me.  I hope to see her again next month.  lol

I have seen, anytime.  

I send out news letters and schedules but not to anyone that has not contacted me before. Maybe you fill out screening for her in the past and she is reaching out now.

It's possible other providers are selling their mailing lists.

That's exactly why many gentlemen prefer agencies. Speaking for ourselves, we have never sent out an unsolicited email.

are networking these days and will share contact lists, and may even be charging others for their lists, as Lester suggests, above.  It makes sense from a marketing standpoint.  In modern marketing, the most valuable customer lists are based on "psychographics", i.e., targeting customers who have a known history of how they spend their money based on prior purchases. (Almost all internet marketers use this method of selecting customers to target and the cookies allows them to gather this info.) You are a KNOWN purchaser of pussy, and so your contact info is more valuable to another provider than a "demographic" list, i.e., 35 year olds who watch porn or subscribe to mens' magazines.   I get a few dozen marketing emails from providers I don't know a year.  They are always on the email I use for this hobby.  If I got one on my personal or business emails, I WOULD be surprised.  It's a convenient way to get notice of their web ads and have a look.   Some I respond to, and some I ignore, it's no big deal.   If this is your first one, I can understand you being "surprised," but after you have given your P4P contact information to a few hundred providers, you are likely to see it more often.  

Many of the ladies have "social media managers" handling their Twitter/X and Instagram accounts. These "managers" handle multiple ladies. No question that the "managers" are sharing client and contact information amongst their group. If a guy sees one of a "manager's" ladies his/her other ladies will start interacting with the guy on social media. They may share email info as well, especially if the "manager" is involved in booking/screening (some are, some aren't).