/** * When someone unsubcribes, it adds email in 'unsubscribed' table * @param str * @param int user id optional: only if subscriber is also a registered user */ function alo_em_add_unsubscribed_email_in_db_table($email, $user_id = false) { global $wpdb; if (!alo_em_check_email_in_unsubscribed($email)) { alo_em_add_email_in_unsubscribed($email); } }