Doug,
DR> - A header (or what ever they will be called) tag in a defined format that
DR> includes the recipients email address the sender used.
That is what is supposed to be in the TO field. What are you asking
for that is different?
DR> - A mini protocol between the MUA and the opt-out sites that allow
DR> a user to opt-out in a standard way.
That sounds like a standard format for a URL, contain the parametric
information along with the target domain name.
d/
--
Dave Crocker <dcrocker-at-brandenburg-dot-com>
Brandenburg InternetWorking <www.brandenburg.com>
Sunnyvale, CA USA <tel:+1.408.246.8253>