Connecting Contact's email with Company already in database

My idea is: Connecting Contact’s email with company.

I think these groups of people would benefit from this idea: Anyone in B2B marketing.

Why I think they would benefit from this idea: Contact would identify it’s company just by entering e-mail.

Any code or resources to support this idea:

Are you willing to work on this idea?: Yes. testing.

What skills and resources do you need to explore this further?

Hi. I think it would be great if one could connect any customer who enters it’s email that is also an official company email.

For example if company “Example l.t.d.” has the official domain, anyone who enters email address will be automatically connected to the company Example l.t.d.