How to add product SKU to WooCommerce order email

When a new order is placed in WooCommerce, customer receives an email with order items. But it does not include product SKU. It might be necessary for many people to show product SKU in order email. We can add product SKU to order email easily using woocommerce_email_order_items_args filter.

We can also show product images in order email using the same filter.

function careless_add_sku_to_wc_emails( $args ) {
    $args['show_sku'] = true;

    return $args;
}
add_filter( 'woocommerce_email_order_items_args', 'careless_add_sku_to_wc_emails' );

Code goes in the functions.php file of your active theme.