Check if email address is personal or business related [closed]

I would like to verify if email address is of some university or corporate or just personal use.

just like how teamblind.com does things. how they verify if the email address is associated with company or not?

I’ve read several stackoverflow question’s answers but it doesn’t seem to fit in with my requirements. also many post on the internet verify email by matching email with [email protected] pattern but there can company with different pattern and university does have different pattern than this too.