# Track UTMs on Privy Popups

## UTM attribution overview

Privy UTM Tracking Integration only records UTMs that land on the checkout URL at purchase time. UTM Grabber keeps them in cookies on your site. This page explains how to pass that data through before the customer pays.

### What to expect

Privy campaigns on WordPress can use hidden fields filled by UTM Grabber.

### Steps

1. Hidden fields on Privy signup campaigns

### Append UTMs with utm-out

```
<a href="https://your-checkout-url.example/product" class="utm-out">Buy now</a>
```

UTM Grabber rewrites the link with cookie values. Details: [utm-out class guide](https://docs.utmgrabber.com/books/102-getting-started-for-handl-utm-grabber-v3/page/appending-utms-to-the-buttons-using-class-name-attributes-selectively).

For webhook-based attribution after purchase, see [Send Privy UTMs via Webhook](https://docs.utmgrabber.com/books/privy-integration/page/end-rivy-s-via-ebhook).