On 2010-09-12, Rob Browning wrote:
> 
> Call notmuch-fcc-header-setup from message-header-setup-hook rather
> than message-send-hook.  This allows you to see what's going to
> happen, and to make manual adjustments if desired.  Gnus does
> something similar.

I don't object to filling in the fcc stuff at a different point in time,
but personally, I don't want to see it in my outgoing mails (it is
always the same for me). So someone should make a decision on what we
want to show to the user and what not (and add fcc to the hidden headers
if we don't want to see it by default).

Sebastian