Hello!

I have a list of email addresses which I analyze by provider. column a for example has the full address "[email protected]" while column b only shows the provider "email.com".
I need to double check if the address is valid or if it is incorrect / non-existent. Since I will never know that for sure unless i send an email, I was wondering if there is a way from excel to at least double check if the provider / address is valid?

Any ideas on how to tackle this problem? Advices are welcome
thanks,

A2k