Formit how to block certain domains

My client needs to block certain email domains from being able to fill up a download form.
basically they would like competitors (, not to be able to submit.

Is there some hook in formit which can achieve this?
Thank you!

I think you could use a regular expression in the email validation field.


The regular expression would be something along the line of:


Validation in FormIt

works great, thank you!

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