Attribute revenue with Polar Checkout Links
Before proceeding, confirm that you have linked your Polar account.
In your Polar Dashboard, go to Products > Checkout Links and create a new Checkout Link.
For the "Success URL", choose to redirect customers back to your website and append ?checkout_id={CHECKOUT_ID} to the URL.

Flowsery Analytics will automatically detect the checkout_id in the URL and record the payment.
Important notes
- Duplicate payment events are automatically ignored, so multiple redirects are not a concern
- Works best when the customer completes the entire purchase journey on the same device and browser
Following a successful payment, revenue data should appear in your dashboard (referrer, country, browser, etc.).