It’s a part of the business, so why not share it?
I just wanted to thank you for coming out to our callbacks last night. We saw a ton of great talent, including you. I just wanted to let you know that we won’t be casting you for Becoming Ingrid, but we’ll definitely keep your info on file for future projects, and thank you for your interest in Rubicon Theatre Project!
The important thing is to remember that a rejection is not an director/company telling you that you suck, or that you can’t act. They’re just telling you that you’re not what they were looking for. Come on: If you were a director, would you cast someone you didn’t think fit your artistic vision? No. Be genuinely grateful for the opportunity to be seen, and more such chances are sure to come your way.