add_filter( 'mailpoet_unsubscribe_confirmation_page', 'mp_modify_unsubscribe_confirmation_page', 10, 2); function mp_modify_unsubscribe_confirmation_page( $HTML, $unsubscribeUrl ) { $HTML = '
'; $HTML .= 'You can click here to unsubscribe. '; $HTML .= '
'; return $HTML; }
'; $HTML .= '
'; return $HTML; }