[ale42]

If you ended up on the list without signing up, well I wouldn't blame you to click the "Report spam" button, because that's what it is.

But I'm pretty sure that some people who actually signed up on purpose to be on some mailing list just click the spam button not to see them any more, because they are not any more interested, or for whatever other reason.

[nottorp]

That's probably 1% of 1%. The rest is opt out instead of opt in and dark patterns.