Hey uh so which one of us is gonna start suing companies (often the usual suspects --credit cards, the shady credit bureaus) sending emails without Unsubscribe links and claiming "this isn't a marketing email" when it's clearly meant to get you to engage and doesn't contain any meaningful account update?

I do mark them as spam and send an "Unsubscribe" response occasionally anyhow, but seems folks think they're being clever with these.