[Plugin: Contact Form 7] Blocking free email accounts

I was wondering if there was a setting to block certain domain names on the email field. For example, free email domains like: gmail, hotmail, yahoo, etc.

Maybe there is something I can place in the additional settings box, or tack something onto the tag generator? I feel like the additional settings could have some great potential, sadly there seems to be no documentation on it.

If there’s nothing built-in that I can use, I’ll just end up editing the PHP myself.

https://www.ads-software.com/extend/plugins/contact-form-7/