MailerLite UTM Tracking Integration

• How to collect UTMs in MailerLite with HandL UTM Grabber
• Send MailerLite UTMs via Zapier or Webhook

How to collect UTMs in MailerLite with HandL UTM Grabber

UTM attribution overview

This guide explains How to collect UTMs in MailerLite with HandL UTM Grabber. It helps you pass lead attribution into your CRM, email platform, or marketing automation workflow and keep the marketing context needed for accurate reporting across forms, bookings, signups, and sales.

Download official mailerlite plugin

You can download it from

Set up your custom fields in mailerlite

Make sure your custom fields match exactly with ours for much easier integration. Native WP Shortcodes

Create your form in MailerLite plugin

Select the custom fields that you want to include in your form. Here we included only two out of many. Feel free to include more as you need it from Native WP Shortcodes.

Your form will look like this

Use the shortcode for the form and include it in your page. Your form will look like this

You will most likely hide the utm fields

You can use the code attached to hide all the UTM fields. Make sure the list all the parameters you used from the third step. Here we only have ['utm_source','utm_campaign']

['utm_source','utm_campaign'].forEach(function(v){jQuery("[name*="+v+"]").parent().hide()})

Form after hiding the fields

After removing the fields, your form will look like this.

Test

Take your form and it should populate all the utm fields automatically. You can see the data in MailerLite dashboard (Subscribers)

That's it!

Send MailerLite UTMs via Zapier or Webhook

UTM attribution overview

This walkthrough covers sending full UTM Grabber data from MailerLite to Zapier, Make, or your own webhook. Handy when you need gclid, fbclid, first-touch fields, or custom params alongside the lead or order.

For the primary setup, see the main MailerLite guide.

When a webhook makes sense

Native fields in MailerLite often stop at basic UTMs. A webhook lets you push everything UTM Grabber stores without trimming values or losing click IDs.

Thank-you page script

Paste this on your confirmation page. Swap in your Zapier or Make hook URL.

<script>
var qvars = {};
window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m, key, value) {
    qvars[key] = decodeURIComponent(value.replace(/\+/g, ' '));
});
qvars = Object.assign({}, (typeof handl_utm !== 'undefined' ? handl_utm : {}), qvars);
setTimeout(function() {
    var data = new URLSearchParams(qvars).toString();
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.open('GET', 'https://hooks.zapier.com/hooks/catch/YOUR_ID/YOUR_KEY/?' + data, true);
    xmlHttp.send(null);
}, 1000);
</script>

Full pattern explained in Triggering Zapier on Thank you Page.

Quick Zapier / Make checklist

1. Create a Catch Hook trigger and copy the URL
2. Run a test conversion with UTMs in the landing URL
3. Confirm gclid, utm_source, and email (if present) show up in the payload
4. Map fields into your CRM or spreadsheet

Parameter reference: Native WP Shortcodes.

Make users: see Make Integromat integration.