Emacs を終了したら LINE に通知が行くやつ

line-notify.el

(require 'request)

(defconst line-notify--endpoint
  "https://notify-api.line.me/api/notify")

(setq line-notify-token "XXXXXXXXXX")

(defun line-notify-sync (message)
  (request
   line-notify--endpoint
   :type "POST"
   :sync t
   :data `(("message" . ,message))
   :headers `(("Authorization" . ,(concat "Bearer " line-notify-token)))))


(add-hook 'kill-emacs-hook
          (lambda nil
            (line-notify-sync (concat "died at "
                                      (format-time-string "%Y/%m/%d %r")))))

http://gongo.hatenablog.com/entry/2016/10/05/214855