I doubt it. What if it's a typo? There are at least 3 people who I get emails (and bank statements) for in my first.last@gmail.com address, and from what I can tell it's because they dropped the middle initial when signing up or the person mailing them did it manually and messed it up.
And because Gmail treats that dot differently else I have some interesting cases like where I have 2 Instagram accounts under my email, one with it and one without, and it's not always clear which one the email is for until I expand the details. I have been tempted to log in and shut these down, but I'm pretty sure that is illegal. However some sites require me to log in to unsubscribe or contact support so into the spam they go.
> tempted to log in and shut these down, but I'm pretty sure that is illegal
Ehh. Intent matters a lot. I'm not saying someone couldn't go after you, but as long as you weren't actively trying to make off with their data or impersonate them I think you'd be in the clear.
Imagine you got such an email and were confused. So you went to log in but couldn't. So you reset the password in confusion. That's not illegal, it's a very reasonable response to being notified of an account that you don't remember creating. If contacting the service provider fails, closing the account would seem to be the only remaining reasonable course of action. It's not your fault the service provider doesn't verify things.
And because Gmail treats that dot differently else I have some interesting cases like where I have 2 Instagram accounts under my email, one with it and one without, and it's not always clear which one the email is for until I expand the details. I have been tempted to log in and shut these down, but I'm pretty sure that is illegal. However some sites require me to log in to unsubscribe or contact support so into the spam they go.