   ;; compose messages in a separate frame
   (setq mu4e-compose-in-new-frame t)
 
+  ;; customize the reply/quote citation format
+  (setq message-citation-line-format "On %a, %b %d, %Y at %R, %f wrote:\n")
+  ;; choose to use the above formatted string
+  (setq message-citation-line-function 'message-insert-formatted-citation-line)
+
   ;; confirm before sending
   (add-hook 'message-send-hook
             (lambda ()

  (add-to-list 'mu4e-view-actions
               '("bView in browser" . mu4e-action-view-in-browser) t)
  ;; search for messages by the sender of the opened message
  (defun search-for-sender (msg)
    "Search for messages sent by the sender of the message at point."
    (mu4e-headers-search
    (concat "from:" (cdar (mu4e-message-field msg :from)))))
  (add-to-list 'mu4e-view-actions
               '("xSearch for sender" . search-for-sender) t)

  ;; set `mu4e' as emacs' default email program
  (setq mail-user-agent 'mu4e-user-agent)

;;
;; Aaron LI
;; Created: 2016-02-21
;;

;;; Commentary:
