On Sat, 05 Dec 2009 00:07:36 +0600, Mikhail Gusarov <dottedmag@dottedmag.net> wrote:
> The only problem with Cc is that Mailman suppresses duplicate messages and hence
> there is no List-Id: on message.

Hey, well notmuch doesn't even index the List-Id: header anyway. [*] ;-)

But the above sounds like the List-Id header is unreliable enough to be
useless. Any reason not to just use something like
to:notmuch@notmuchmail to match messages sent to a list like this one?

I think mailman defaults to not allowing messages with the mailing-list
address implicit (such as in a Bcc) so it seems like matching the list
recipient will be more reliable than hoping the List-Id is always there.

-Carl

[*] Our TODO list does talk about supporting a configuration parameter
for indexing additional headers of interest.