This was previously answered by ReoonSupport who said: Hi, thanks for the query. At the moment we support the following WordPress forms. Support for more WordPress forms will be added in future.

Supported WordPress Forms:
- Formiddable Form
- Gravity Form
- Default WordPress Registration Form
- WooCommerce Checkout Form
- Contact Form 7
- Ninja Forms
- WPForms
- Elementor Forms
- Fluent Forms
- Forminator Forms
- HappyForms
- Mail Mint Form
- Contact Form by BestWebSoft
- Wordpress Comment Form

Have a wonderful day.

You can find that answer here: https://appsumo.com/products/reoon-email-verifier/questions/does-this-work-with-mailpoet-925481/