WooCommerce: Add an extra email recipient to the email sent when an order has been completed

woocommerce-add-extra-email-recipient-completed-order

/**
 * Add extra emails to the WC email sent when an order has been completed.
 *
 * Make sure you separate multiple emails with a comma.
 *
 * @param $recipient
 * @param $object
 * @return string
 */
function zpd_wc_extra_email_recipient( $recipient, $object ): string {
    $recipient = $recipient . ', shop@zpddemo.com';
    return $recipient;
}
add_filter( 'woocommerce_email_recipient_customer_completed_order', 'zpd_wc_extra_email_recipient', 10, 2);