I encountered one where trying to unsubscribe required me to not just log in, but, if I wanted to change my email settings, also enter a password. However, this

I encountered one where trying to unsubscribe required me to not just log in, but, if I wanted to change my email settings, also enter a password. However, this site used single sign on, so... there was no password to enter. I've given up on unsubscribing the 'right' way. Too much bs most of the time. It's now just mark as spam and move on.