Re: Feedback on Hypertext Mail Protocol (a.k.a. Stub Email)

...more thoughts on "obfuscation as spite":

MTA-level whitelists would then be known as "non-spitelists"--messages 
stored on whitelisted domains would not be "verified" thereby 
affording them all the bandwith benefits IM2000 has to offer. Of 
course, the blacklist equivalent is the dreaded "spitelist", where the 
message is retrieved X >> 1 times and then trashed.

So maybe eventually all spammers will find ways to be on whitelists.

Then final destination MTAs like Yahoo could offer a service to paying 
email customers to request every email message 10000 times before 
inboxing it (and if the sender thinks he's smart and returns 1 byte 
the first 999 times and the entire message the 1000th time, guess 
what? his message isn't going into the Inbox). Yahoo would have a 
massive array of computers basically doing a limited form of DoS on 
senders.

Nathan