Add another email recipient when order completed

When the order is completed an email is automatically sent to the customer. You can add an extra email recipient using this code.

		/**
 * Add another email recipient when order completed
 */

add_filter('woocommerce_email_recipient_customer_completed_order', 'cc_extra_email_recipient', 10, 2);

function cc_extra_email_recipient($recipient, $object) {

  $recipient = $recipient . ', [email protected]';
  return $recipient;

}