Originally Posted by ChicagoRon
I was trying to think of a reason the BCC might matter vs. a forward of the original note. The only thing I can really come up with is that either you or the recipient could have doctored the original note (i.e. there could wind up being two versions), but if everyone receives the same initial note, no foul play could happen.
Of course AFAIK, if you really wanted to doctor email, you could just send an email to that one person with headers making it look like it was sent to a bunch of people. You might have to get someone to do funky things to your mail server but on the recipient's end, it would look normal.
I have seen BCC used to send to a bunch of people without opening up the possibility of a boneheaded reply-all. It only works if it is obvious that the email has a wide distribution (like an newsletter or company announcement)...everybody gets it but nobody can respond to everybody.