Yesterday I set a new rule in my email application.
Any email containing the word unsubscribe is marked red.
That way I know what action is required. It takes a second or two to determine whether this is something I want to continue receiving, and the answer is usually no. I search for the text unsubscribe, I click the unsubscribe link, and I’m done with it.
There are other ways to do it but this is a drop-dead simple way to combine automation with manual review and high efficiency.