For does not work: I can't find PRIVMSGS_REPLY_MAIL defined anywhere in includes/constants.php: // Private messaging define('PRIVMSGS_READ_MAIL', 0); define('PRIVMSGS_NEW_MAIL', 1); define('PRIVMSGS_SENT_MAIL', 2); define('PRIVMSGS_SAVED_IN_MAIL', 3); define('PRIVMSGS_SAVED_OUT_MAIL', 4); define('PR...