Send Hidden UTM Fields to Mailchimp

We’re using Contact Form 7 to collect lead contact information. We added the Easy UTM tracking with contact form 7 plugin to capture UTM parameters from links we provide in posts. That gives us hidden fields with the parameters that we’ve added to our CF7 contact form. Then we’re using MC4WP: Mailchimp for WordPress to send to Mailchimp.

How do we send the information in the hidden fields to Mailchimp? I’ve tried about every combination I can think of to pass the values, but nothing seems to work. Any advice or help?

One of the MC fields I want to fill is “USOURCE” and the hidden field is “utm_source” – the others are similar.

Thanks –


This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer