That unsubscribe rule is genius. (Obvious in hindsight, as the best things are.) Thanks for that.

if you're in Gmail this filter works really well for me:

("list-unsubscribe" OR "unsubscribe" OR "list-id")

If you’re in gmail there’s literally already an interface to easily unsubscribe from stuff, it’s under “Manage subscriptions”. Yahoo similarly have a “subscriptions hub”