On Thu, 09 Dec 2010, Felipe Contreras wrote:
> Hi,
> 
> I don't know how it works in gnus, but at least on the vim mode, the output
> generated by 'notmuch reply' is not ready to be sent, at least the Message-ID
> field is needed, and also is nice to have the User-Agent.

I'm not sure whether filling the message-id in notmuch is a useful
thing. With Emacs UI I often send messages which differ only in small
pieces to several people. I prepare a first version of the message and
send it, then I edit the sent message and send it once again etc. All of
these messages should have a different message-id and date headers.

If you want to allow the UI to send a single message multiple times (and
I find it useful) then you need generate the message-id at the time of
sending and as such it has no sense to generate the headers in notmuch.

I have nothing against filling User-Agent header as its value does not
change frequently.

-Michal