filter confirm

<?php
add_filter( /**
 *
 * Filter the decision to send a confirmation or not
 *
 * @param $bool
 *
 * @return bool overrides any logic if set to true, if set to false then standard rules apply
 */
	'qem_registration_always_confirm',
	function ( $bool ) {
    // your logic to set $bool to true or false
		return $bool;
	},
	10,
	1
);