> you don't understand how Google implements it. Gmail does support this header, but only for senders with high reputation. Then how come emails with unsubscri

> you don't understand how Google implements it. Gmail does support this header, but only for senders with high reputation. Then how come emails with unsubscribe buttons in the UI do not have the list-unsubscribe header set, and emails with the header do not have the button visible? Also, I'm not sure that "you don't understand how to use the system" follows from "you can only use the system if you're an invited VIP"