How To Turn Off Messages On Imac - Apple menu > system preferences >. Web open messages > click messages > preferences > imessage > sign out > sign out. To change these settings, choose messages > settings, then click. Web in the messages app on your mac, use imessage settings to change options for your imessage account.
Web open messages > click messages > preferences > imessage > sign out > sign out. To change these settings, choose messages > settings, then click. Apple menu > system preferences >. Web in the messages app on your mac, use imessage settings to change options for your imessage account.