   ;; change the luminosity form dark theme
   (setq shr-color-visible-luminance-min 70)
 
-  ;; add custom bookmarks
+  ;; Set bookmarks
   (setq mu4e-bookmarks
-        '(("flag:unread AND NOT flag:trashed" "Unread messages"      ?u)
+        '(("flag:unread AND NOT flag:trashed" "INBOX"                ?b)
           ("flag:draft"                       "Drafts"               ?f)
           ("tag:todo OR tag:task"             "TODO / Task"          ?t)
           ("tag:work"                         "Work"                 ?W)

  ;; exclude the duplicate messages with the same `Message-ID'
  ;(setq mu4e-headers-skip-duplicates 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

        message-sendmail-extra-arguments '("--read-envelope-from")
        sendmail-program "msmtp")

  ;; Allow mu4e to fetch mail and update index
  ;; NOTE: I use own cron/shell task to get/sync email
  (setq mu4e-get-mail-command "true")
  ;; Get mail and update index periodically in the background (unit: seconds)
