BCC from the FROM header

[Michael Wagner]

Hello folks,

I have a folder called 'privat' in which all the private mails from my 3
accounts are collected. When I answer to a mail, I want to write mutt
the Bcc with the adress found in the From header, because I want my
answers in the same folder. I know folder-hook, but it only works with
one mail adress. How can i realize this?

I hope my question is clear enough.

TIA Michael