Coaches do not send personalized camp invitations to their camps with a phone number requesting you call off a blind email. The program sends a form letter that looks very personalized. My dog once received what looked like a personalized camp invite after I filled out an online recruiting form in his name. I was trying to prove a point to a parent who thought their potential D2 prospect son was being recruited by one of the top D1 programs in the country.
If the coach has seen the player perform, he’s impressed and then the player makes contacts the coach might provide his phone number. If the player is previously recommended as a “must see” by a reliable baseball contact the coach might include his phone number. If the player is a huge local name the coach may be aware of him and provide his phone number.
But coaches do not provide their phone number to blind contacts.
Don't be so quick to say "NEVER" RJM. It's a strong word and it's a bit dissmisive. Coaches DO communicate with players and DO provide phone numbers when they are interested in a player. I know from personal experience with my son. A phone number is not a social security number. It's a phone number. My son received more than a few emails with coaches sharing their number. Why is that so unbelievable to you? An invite to a camp, a request to share a schedule, and sharing a phone number happened in our world. That's our reality. You are not a "blind contact" when the coach has taken the time to review the players video, summer stats, grades, test scores, etc. I will admit this did not happen at the D1 level, but it happened more than a few times with regard to coaches at the D3 level.