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Track UTMs in SamCart via Webhook on Success Page

UTM attribution overview

Send full HandL UTM Grabber attribution from SamCart orders to Zapier, Make, or your CRM using SamCart order webhooks or a custom success page script.

SamCart order webhook

Configure SamCart to POST order data (including custom fields prefilled from UTM Grabber) to a Zapier Catch Hook. Map utm_source, gclid, customer email, and order total to your CRM.

Success page script

If SamCart redirects to your WordPress thank-you page, use the standard merge script from Triggering Zapier on Thank you Page to combine URL params with handl_utm.

Why use webhooks?

  • Send all click IDs and custom params, not just four standard UTMs
  • Push gclid to Google Ads offline conversions via Zapier
  • Tie revenue to campaigns in HubSpot, ActiveCampaign, or Salesforce
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