Blocking specific emails for forms

We would like to be able to block specific email addresses for our forms. Our “contact us” form on our website is constantly bombarded with gmail addresses of spammers. We don’t want to block the gmail domain but would like the ability to block specified email addresses that contain gmail to prevent specific users from submitting forms.

I think this needs to be priortized because it seems to be a very common issue.

And there should be ability to block contacts from a specific IP address too because we are being spammed by someone with multiple business domains but submitting form from one single system.

I’m also having this problem. Some person booked 8 meetings through a demo form and showed up to none of them.