Hilton hotels, can't unsubscribe because of account login forced. This is my new fix!
It's amazing how many unsubscribe links, which are mandated by law, are broken or flaky. I just "report spam" now when that happens, and it totally works. No regrets.
In the short term, spam complaints hurt reputation and reduce deliverability, but if a sender is failing to employ email best practices, can they be surprised if they don't have the best results?