How do you add a user custom field into Woocommerce emails? This is my code so far in functions.php add_filter( 'woocommerce_email_order_meta_fields', 'custom_woocommerce_email_order_meta_fields', 10, 3 ); function custom_woocommerce_email_order_meta_fields( $fields, $sent_to_admin, $order ) { $fields['meta_key'] = array( 'label' => __( 'Store number' ), 'value' => get_user_meta( $user_id, 'wpcf-store-number', true ), ); return $fields; } The user custom field is wpcf-store-number which is already in the database. All I need to do now is to show it in the order confirmation email / New order email.