Or do you mean going after the accounts of companies that make use of a likely scraped email address? That's not a bad idea either, but it has risks and isn't the same thing.
> I came across your profile on GitHub. Given you're based in the US, I thought it might be relevant to reach out. > > Profile: https://github.com/tedivm
They aren't doing anything to hide it.
> we can (and do) take action against those accounts including banning the accounts