I have noticed over the past year that the savviest digital communicators I know use a simple phrase in group emails: “I’m moving ______ to Bcc:.” I had a hunch about what this meant, but I finally decided to ask them, specifically, why they do it.
After a few conversations, I quickly learned that this move is pure digital etiquette. If A emails B and C to introduce them to each other, B or C can move A to the Bcc line as a way to say, “thanks for the invitation, we’re off and running now, and we don’t want to continue to flood your inbox with our correspondence.” Because A was moved to the Bcc line, he/she/they will automatically be removed from all future emails between B and C.
As such, once you move someone to the Bcc line, you formally acknowledge his/her/their contribution to the present conversation and officially do him/her/them the favor of not having to keep up with the future conversation. It’s another small way to be thoughtful in the (online) world.