when you unsubcribe from an email there should be a button that says "i love you" so you can press that too if you have no hard feelings over getting the email

Replace all "OK" buttons with "It's OK" to foster a new age of compassion instead of just resigned acceptance

Sounds like an idea Roast Beef would come up with.

but also "i hate you" as an option just to let them know

it should just send them the number of emails you let them send you before you cut ties. let em know you earned that unsubscribe

I would never press this, as anyone who sends me an email becomes an enemy.