Pass UTMs to Lemon Squeezy Checkout

UTM attribution overview Lemon Squeezy 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 Checkout URLs can include custom data params. Steps Pass custom data query params from handl_utm 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 . 
 For webhook-based attribution after purchase, see Send Lemon Squeezy UTMs via Webhook .