add_filter( 'woocommerce_email_format_string', function( $string, $email ) {
$order = $email-object;if ( $order instanceof WC_Order ) {
$items = [];
foreach ( $order-get_items() as $item ) {
$items[] = $item-get_name();
}$string = str_replace('{item_names}', implode(', ', $items), $string);
$string = str_replace('{item_url}', get_permalink($item-get_product_id()), $string);
}return $string;
}, 10, 2 ); 
