Track UTMs in Bookeo via Webhook on Thank-You Page

UTM attribution overview 
 This guide explains how to send full HandL UTM Grabber attribution from Bookeo bookings to Zapier, Make (Integromat), or any webhook — without the 64-character source field limitation. Bookeo redirects customers to a custom confirmation page after booking, where you pass the customer email and trigger a webhook with every UTM parameter UTM Grabber has stored. 

 If you only need basic source tracking and can fit your data within 64 characters, see Method 1: Flattened source parameter . 

 Step 1 — Configure Bookeo to redirect to your thank-you page 
 Bookeo lets you redirect customers to a custom confirmation page after they complete a booking. Follow Bookeo's guide: 
 How can I redirect customers to a different confirmation page after they have completed a booking? 

 
 Go to Marketing > Conversion tracking and analytics 
 Scroll to Other tracking methods 
 Paste the redirect code below into the text box 
 

 Use a 5-second delay so Bookeo's built-in conversion tracking (Google Analytics, Google Ads, Facebook Pixel, etc.) has time to fire before the redirect: 
 <script>
window.setTimeout(function() {
 window.top.location = "https://www.yoursite.com/bookeo-thank-you?email={EMAIL}";
}, 5000);
</script> 

 Notes from Bookeo: 
 
 {EMAIL} is a Bookeo placeholder that is replaced with the customer's email address at booking time 
 You can also use {PRODUCTCODE} and {LANGUAGECODE} to redirect to different thank-you pages per product or language 
 Redirect to an https:// URL for maximum browser compatibility 
 

 Step 2 — Trigger your webhook on the thank-you page 
 On your WordPress thank-you page, add a script that merges the email from the URL with all UTM Grabber cookie data and sends everything to your webhook. 
 Don't forget to replace the webhook URL with your own Zapier, Make, or custom endpoint. 
 <script>
var qvars = {};
window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m, key, value) {
 qvars[key] = decodeURIComponent(value.replace(/\+/g, ' '));
});

// Merge URL params (email from Bookeo) with all UTM Grabber data
qvars = Object.assign({}, (typeof handl_utm !== 'undefined' ? handl_utm : {}), qvars);

setTimeout(function() {
 var data = new URLSearchParams(qvars).toString();
 console.log('Sending to webhook:', data);

 var xmlHttp = new XMLHttpRequest();
 xmlHttp.open('GET', 'https://hooks.zapier.com/hooks/catch/YOUR_ID/YOUR_KEY/?' + data, true);
 xmlHttp.send(null);
}, 1000);
</script> 

 This is the same pattern used in our general Zapier thank-you page guide: Triggering Zapier on Thank you Page . 

 What data gets sent to the webhook 
 The webhook receives a query string containing: 
 
 email — passed from Bookeo via the {EMAIL} placeholder in the redirect URL 
 utm_source , utm_medium , utm_campaign , utm_term , utm_content — standard UTM parameters 
 gclid , fbclid , msclkid — ad click IDs 
 Any custom parameters configured in UTM Grabber 
 
 See the complete parameter list in Native WP Shortcodes . 

 Zapier / Make setup 
 
 Create a new Zap (or Make scenario) triggered by Webhooks by Zapier → Catch Hook (or Make's Custom Webhook module) 
 Copy the webhook URL into the script above 
 Complete a test booking in Bookeo and confirm the webhook receives email plus all UTM fields 
 Map the fields to your CRM, spreadsheet, or reporting tool 
 

 Why use this method? 
 
 No 64-character limit — send every UTM parameter in full 
 Email matching — Bookeo passes the customer email so you can tie attribution to the booking in your CRM 
 Works with any webhook — Zapier, Make, n8n, or a custom API endpoint 
 Preserves Bookeo conversion tracking — the 5-second delay lets Bookeo's built-in analytics fire before redirect