Dave - the problem with basic email is that is has no assured delivery capabilities or receipt processes.
To that end, and to Dave's question (and some I've received off-list) - these are not particularly *technical* standards - they are practical standards, having to do more with email industry process and practice - and while they are framed as ISIPP's standards, they were formed, refined and adopted unanimously by: RoadRunner AOL Microsoft Outblaze SpamAssassin Cloudmark Ironport Everyone.net MSN/TV SamSpade Cyphertrust Word to the Wise ReturnPath Mailshell MessageFire MailFrontier Cable & Wireless ePrivacyGroup Cheetahmail Digital Impact Yesmail RappDigital Innovyx Digital River Silverpop Socketware Atriks and TheMail.com WhatCounts Digital Connexxions e-Dialog Uptilt ExactTarget Captaris Experian Acquireweb SubscriberMail NetCreations iVillage CNET ..and, indeed, many of these orgs have already put them into practice. They are based on a dialogue between senders and receivers, in which the senders basically said "tell us what we have to do to get our mail delivered", the receivers said "this is what you have to do, and what can we do to help you do that?"..and this is the result. It's not the law.. but when several of the top ISPs and spam filters say "do this", senders listen. Anne