You need to set up a hook for the notification you prefer: https://emacs.stackexchange.com/questions/3844/good-methods-for-setting-up-alarms-audio-visual-trigge

You need to set up a hook for the notification you prefer: https://emacs.stackexchange.com/questions/3844/good-methods-for-setting-up-alarms-audio-visual-triggered-by-org-mode-events https://emacs.stackexchange.com/questions/3844/good-methods-... Tons of options: shell scripts, dbus.el (since 23)/notifications.el (since 24), write(1)/wall(1) for terminals, etc