I have the exact same issue with noah.clark@gmail.com and noahclark@gmail.com

I've probably gotten HUNDREDS of e-mails for noahclark@gmail.com (I can tell by checking the to field) in my noah.clark@gmail.com. I know where he lives, what type of art he collects, major purchases, and some pretty significant family issues as well as the homework he has been assigned.

I just do my best to notify who ever sent the e-mail that they have the wrong address.