Bookeo UTM Tracking Integration
Track UTM parameters and marketing attribution in Bookeo bookings with HandL UTM Grabber. Pass flattened source data into Bookeo or send full attribution to Zapier, Make, and other webhooks via a custom confirmation page.

Track UTMs in Bookeo via Flattened Source Parameter
UTM attribution overview 
 This guide explains how to pass HandL UTM Grabber attribution into Bookeo bookings using the ?source= parameter. UTM Grabber already captures and stores UTM source, medium, campaign, term, content, click IDs, referrer, and landing page data in the visitor's browser. Bookeo only exposes one custom tracking field — Source — so we flatten every utm_ parameter into a single pipe-delimited value and append it dynamically to your Bookeo booking links and widget. 

 Bookeo documents this approach in their help center: Can I track the source of bookings in Bookeo? 

 How Bookeo source tracking works 
 Append ?source= followed by your campaign identifier to any Bookeo booking link or gift voucher link. For example: 
 https://bookeo.com/yourbusiness?source=summer_promo 
 The same parameter works when embedding the Bookeo widget on your WordPress site. After a booking is completed, the source value appears in: 
 
 The Source field in the HOW section of each booking 
 The Source column in Marketing > Reports > Bookings 
 

 Flatten UTM Grabber data into the source field 
 Because Bookeo only provides the single source custom field, concatenate all UTM Grabber parameters into one value using a pipe ( | ) delimiter: 
 ?source=utm_campaign=summer_sale|utm_source=google|utm_medium=cpc|utm_content=ad1|gclid=abc123 
 HandL UTM Grabber stores these values in cookies and exposes them via the global handl_utm object (and Cookies.get() ). Use the script below to read every tracked parameter and build the source value automatically. 

 Dynamic source builder script 
 Add this script on any page that links to Bookeo or embeds the Bookeo widget. It builds the flattened source string and rewrites booking links on page load. 
 <script>
(function () {
 function buildBookeoSource() {
 var params = (typeof handl_utm !== 'undefined') ? handl_utm : {};
 var parts = [];

 Object.keys(params).forEach(function (key) {
 var value = params[key];
 if (value && value !== '') {
 parts.push(key + '=' + value);
 }
 });

 return parts.join('|');
 }

 function appendSourceToUrl(url, source) {
 if (!source) return url;
 var separator = url.indexOf('?') === -1 ? '?' : '&';
 return url + separator + 'source=' + encodeURIComponent(source);
 }

 var source = buildBookeoSource();

 // Rewrite direct Bookeo links
 document.querySelectorAll('a[href*="bookeo.com"]').forEach(function (link) {
 link.href = appendSourceToUrl(link.href, source);
 });

 // If using the Bookeo widget, pass source when initializing
 // Example: add ?source=... to the widget URL or booking page iframe src
 window.bookeoUtmSource = source;
})();
</script> 

 Widget / iframe example 
 When embedding Bookeo, append the flattened source to the widget URL: 
 <script>
var bookeoSource = (typeof handl_utm !== 'undefined')
 ? Object.keys(handl_utm)
 .filter(function (k) { return handl_utm[k]; })
 .map(function (k) { return k + '=' + handl_utm[k]; })
 .join('|')
 : '';

// Append to your Bookeo widget embed URL
var widgetUrl = 'https://bookeo.com/yourbusiness';
if (bookeoSource) {
 widgetUrl += '?source=' + encodeURIComponent(bookeoSource);
}
</script> 

 See the full list of trackable parameters in Native WP Shortcodes . 

 Important limitations 
 
 One custom field only. Bookeo provides a single source field for custom tracking. There is no separate field for utm_medium , utm_campaign , gclid , etc. You must concatenate every parameter into this one value. 
 64-character limit. Per Bookeo documentation , the source value may only contain numbers, letters, underscores ( _ ), hyphens ( - ), and pipe characters, and is limited to 64 characters . A full set of UTM parameters will almost always exceed this limit. 
 Practical workarounds within 64 chars: 
 
 Track only the most important parameters (e.g. utm_source and utm_campaign ) 
 Use short abbreviated keys (e.g. src=google|cmp=summer ) 
 Prioritize the click ID if running paid ads (e.g. gclid=abc123 ) 
 
 If you need all UTM parameters without truncation, use Method 2: Webhook on custom thank-you page instead. 
 

 Verify tracking in Bookeo 
 After a test booking, open the booking details and confirm the flattened source string appears in the Source field. You can also export bookings from Marketing > Reports > Bookings and review the Source column.

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