http://help.mail-list.com/m/59114/l/558254-rfc-2369-list-unsubscribe-headers http://help.mail-list.com/m/59114/l/558254-rfc-2369-list-uns... There's and RFC fo

http://help.mail-list.com/m/59114/l/558254-rfc-2369-list-unsubscribe-headers http://help.mail-list.com/m/59114/l/558254-rfc-2369-list-uns... There's and RFC for List-Unsubscribe headers.