(define-key notmuch-message-mode-map (kbd "C-c C-c") #'notmuch-mua-send-and-exit)
(define-key notmuch-message-mode-map (kbd "C-c C-s") #'notmuch-mua-send)
(define-key notmuch-message-mode-map (kbd "C-c C-c") #'notmuch-mua-send-and-exit)
(define-key notmuch-message-mode-map (kbd "C-c C-s") #'notmuch-mua-send)