You need to call. Recruiters are verbal. Reading? Not so much.
Basically, their thought process seems to go about like this:
"Hmm, slow day. I think I'll just go spam 3,000 inboxes of random developers in an attempt to fill a position in some faraway state most of them not only don't live in presently, but would never consider moving to in a million years. They'll be so glad to hear from me! And it will make a great impression not only for our firm, but especially for the Client we recruiting for."