Tell HN: Allow your users to report fraudulent signups without signing in

There really needs to be a new standard one-click way of saying "this isn't me".

The current options are suboptimal for both "user" (aka victim) and company.

1) I try to unsubscribe and it works. You have a user who doesn't receive any email communication from you.

2) I try to unsubscribe and it requires a login. You have a spam report.

3) If it's an app I may actually want to use in the future, I have to go through support to get your user kicked off their current account, possibly annoying them if they were a legit (but lazy or deceptive or whatever) user. You have two annoyed users and a support burden.

In neither of these cases is the actual person who signed up: a) dissuaded from doing this again, if on purpose, b) corrected and set up with a valid email, if by accident.

I've also noticed that for the few apps that make you confirm your email, failing to do so often does not prevent future marketing / re-engagement emails from showing up. So what was the point of requiring confirmation?

Does anyone else have this problem?