My son got a handful of emails (3 to 5?), a couple of which came just after midnight. None were personal messages. Mostly camp invites, some longer emails "introducing" the school's baseball program. One from a midwestern P5 school he had never contacted or heard from (but it was a generic email).
I had warned the boy not to expect too much. He generally took it all in stride, although I know part of him hoped he would be fielding texts and phone calls on 9/1.