[enobrev]

In theory, I agree with the parent post and the sibling reply. If I didn't ask for email, then it doesn't belong in my inbox. In practice, I do what you do - unsubscribe and delete. If I get any more mail after that...

When I get the old "you'll be removed from our list within 10 days" message, I generally reply to it with a quick message: "Please remove me immediately or your next message will be marked as spam". Many times the sender has complied with a personal response provided someone saw my message, even for some large companies with "no-reply" emails.

For smaller companies - especially the mom and pop type operations - I'll usually give them a friendlier notice. "Hi, I unsubscribed and I'm still getting emails. Please remove me as I'd really rather not mark your messages as spam". I usually get a friendly personal response with apologies and a removal.

In all cases, after the company has been warned, I don't think twice about sending them to spam.