A great leader does, or is willing to do, what he expects from his team. If you want to set an example for your PSAs, building a strong relationship from the beginning is important. I believe sending a personal welcome message is a great way to begin a connection with your PSAs. Each PSA has his/her own individual goals. You may gain valuable information from your PSAs through that initial contact. Save the group mailings for general messages and updates to your team.