Sending a Baseball to get autographed...

[DodgerBlue]

I have seen that a few people have sent actual baseballs through the mail to get autographed. I was wondering how they went about doing that? Did you send it in a box? In an envelope? What did you include as far as packaging to receive it back? I'd really appreciate some direction from anyone who has had success sending/receiving an actual baseball through the mail. Thank you very, very much. Cheers!