What is Bcc:?
1.
addresses to which a message should be sent, but which will
not be seen by the recipients.
Supported by most e-mail systems, a normal, non-blind "
"I've decided to BCC: my boss, Karen, so nobody's on best behaviour, and she can see some of the interoffice communications to which she otherwise wouldn't be privy." --Said by office tattletale who, in a just world, would be hung by the toes over a roaring bonfire while the rest of the office roasts marshmallows and sips hot cocoa in celebration of their early bonuses (which turns out to actually be the divvying up of said tattletale's yearly salary).
See