We used to bcc a former supervisor on things, then she’d “reply all” and our ruse was discovered. You could make it a practice to “reply all” to every message - including those on which you were bcc’d.
Reply All: Why am I getting this?
I thought the REPLY ALL option never includes the BCC recipients....
Thank you. I tested this and it works well. I will indeed reply all to him (I won’t know who got it though, right?)