I took a look at notmuch.el and it uses message-mail hard-coded at a few places. My suggestion is to instead substitute compose-mail, which will honor the variable ?mail-user-agent?.
Then, the only problem is the function notmuch-reply, which has a call to message-mode hard-coded. I don?t know what to do about that one. Hope more knowledgable minds than mine will prevail. Maybe message-mode is better or as good as what I?m using today?but it?s still weird to hard-code it like that, and makes it harder to switch to notmuch from other emacs mail setups. Sandra
