This was talked about a few weeks ago here. This is a pretty good FAQ list that explains how the proposal would work. Basically, participating mail systems would work so that the sender would "put up" some small amount of money as a bond, held by a third party, and when the recipient either:
- is verified to have the sender in an approved whitelist
or
- accepts the mail and releases the bond
the sender gets their bond money back.
So in the end, the sender should pay nothing for most of his email transactions. Spammers would have to pay a bunch. It's a method of penalizing people who send mail you don't want....now only if we could do it to the credit card companies with paper mail!
http://www.eecs.umich.edu/~tloder/abm_faq.html#mozTocId747153
- is verified to have the sender in an approved whitelist
or
- accepts the mail and releases the bond
the sender gets their bond money back.
So in the end, the sender should pay nothing for most of his email transactions. Spammers would have to pay a bunch. It's a method of penalizing people who send mail you don't want....now only if we could do it to the credit card companies with paper mail!
http://www.eecs.umich.edu/~tloder/abm_faq.html#mozTocId747153