My perhaps naive thought would be that the charge would be made against the network access provider at the point of entry into the system. So any email that AOL routes from one AOL customer to another AOL customer without having to use any non-AOL hardware would not be charge. Any email that touches somebody else's hardware would be charged the second that it hits that hardware. Lines leased by AOL would be considered AOL property for these purposes. The idea is that AOL knows where email that originated on their system came from, once they put it on somebody else's hardware that other person only knows that AOL gave it to them and as long as AOL paid them for it that is fine. Now that fee follows the email until it reaches it's ultimate destination, so if the AOL email takes a jump on MCI's network and ends up back at AOL AOL will have paid themselves. If an email jumps from AOL to MCI to Charter's network for delivery then AOL ends up paying Charter $.0001 for each email sent from an AOL customer to a Charter customer, and vise-versa. Or the money could go straight into a fund that provides Science and Engineer scholarships to the top US students (this would certainly be easier to manage). (billing would stop at each of the top 10 say network providers). The point is that only the vendor that provides the initial access point knows who handed it the original email and so knows who to charge for it. For each customer there is either a physical plug, or a user name/password that identifies who they are. For each network access provider that groups all of those users together there is a physical or logical wire that connects them to the provider that provides their service and so on. Of course if something like this could be implemented then the spammers would turn to illegally taking over low security computers and turning them into zombies to deliver their spam. Andy. -----Original Message----- From: Mark Bucciarelli [mailto:mark at hubcapconsulting.com] Sent: Tuesday, February 21, 2006 10:29 AM To: Andy Klapper Cc: hidden-discuss at lists.hidden-tech.net Subject: Re: RE: [Hidden-tech] Goodmail spells doom for mailing lists? On Sun, Feb 19, 2006 at 09:58:48PM -0500, Andy Klapper wrote: > I'm talking about something on the order of a $0.001 charge per email > sent outside of an email system. How do you verify who sent the email?