> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
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# How to capture UTM and ref parameters

If the URL of your website contains one of the following parameters, Unicorn Platform will automatically add them to the submitted form data:

* ref
* utm_source
* utm_medium
* utm_content
* utm_campaign
* utm_term

![Form data with utm_campaign parameter](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-11_1r33aoa.png)

Even though this process is automatic, some 3rd party services require extra configuration to receive URL parameters.

#### MailerLite

In your MailerLite dashboard, go to **Subscribers** > **Fields**. Create a new field for each parameter that you would like to capture.

![Additional MailerLite fields for each parameter](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-2_1d3g7t6.png)

![Form data with utm_source parameter in MailerLite](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-3_1lmz3gy.png)

| To learn more about Mailerlite, please read [our guide.](https://help.unicornplatform.com/en/article/how-to-connect-mailerlite-form-integration-1gu63u2/)

#### Mailchimp

In Mailchimp dashboard, go to **Signup forms** > **Settings** tab > **Audience fields and |MERGE| tags**.

![Fields menu in Mailchimp](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-4_1k7ixct.png)

Create a new field for each parameter that you would like to capture. Mailchimp requires a specific format for field names, so you will need to use alternative parameter names when creating fields in Mailchimp:

* For ref use **REF**
* For utm_campaign use **UTM_CAMP**
* For utm_source use **UTM_SOURCE**
* For utm_medium use **UTM_MEDIUM**
* For utm_content use **UTM_CONT**
* For utm_term use **UTM_TERM**

![Additional Mailchimp fields for each parameter](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-5_1uir3z9.png)

You can also give each field a human-friendly label.

![Field labels](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-6_1es82yb.png)

![Form data with ref parameter in Mailchimp](https://storage.crisp.chat/users/helpdesk/website/7e782a40c0560c00/image-7_d1yoem.png)

| To learn more about Mailchimp, please read [our guide.](https://help.unicornplatform.com/en/article/how-to-activate-mailchimp-integration-als2bn/)