Verify if email is valid using Teams and a relaxed logic

[thehackerish]

Verify if the email is valid using Teams and a more relaxed logic.

Solves the issue in #36

[Flangvik]

I have a feeling this might be a bit to relaxed , causing way to many false positives. I'll do some more wide scoped testing, however thanks for the pr!

[thehackerish]

My pleasure, great project! Good job!
Yeah I was thinking of reverting to your first two verifications and then defining a whitelist of attributes like UPN, GivenName, etc. and test them inside the function. Would that be ok for you? Otherwise, I will work with my version and wait for your update.