Add custom fields to Billing details in WooCommerce order email

Hello @kylanmint,

I’m not sure what plugin you’re using to add those fields. You can check this guide on adding custom shipping/billing fields. As for passing the fields to the email, you can use woocommerce_email_order_meta_fields hook.

Let’s take this custom field as an example, to add this custom field in the shipping section you can use the snippet below.

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['shipping']['shipping_phone'] = array(
        'label' => __( 'Phone' ),
        'value' => get_post_meta( $order->id, '_shipping_phone', true ),
    );
    return $fields;
}

Hope this helps!