Hi michellethompson ,
Thanks for reaching out about using Mailchimp with Buttonizer. Unfortunately, our contact form doesn't currently support Mailchimp integration.
However, if you're using Elementor, you could try creating a form popup and integrating Mailchimp that way. Here's a helpful guide on how to do that: https://elementor.com/help/mailchimp-elementor-integration/
You can then use Buttonizer to create a button that opens that popup. 🙂
Hope this helps! Let us know if you have any other questions.