Don't forget "Vanquish was a complete failure, so why would this be any different?" and "do I want Phil Raymond to sue me for violating the patent on this exact scheme?"
That was a specific reply by me to a specific suggestion of a mechanism refunding e-postage to the sender if one wanted an e-mail or leaving the charge if not.
As I said I think it's overly complex in implementation and not of much benefit.
I don't see where Vanquish does any of this from the product site tho I could look at the patents, they might cover more than they used in products of course.
Really, this is a WKBI from 1997. Look at the patent if you don't believe me. Regards, John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. http://jl.ly