Title: .mail proposal
From the perspective of a corporate entity that relies on legitimate email as a vital method to communicate with my customers I believe this to be a good approach. In my opinion, nothing short of radical surgery will cure the spam and email fraud epidemic we suffer from. The hidden costs generated from these issues are shared by consumers the world over. I do take issue with the cost of registration as it could slow adoption. This could promote an "exclusive club" scenario that could keep the proposal from seeing the light of day. If the registration cost ($2000) is intended as a barrier to entry for spammers I believe the proposed sender verification, possibly coupled with legal ramifications, could do a better job to deter unwanted applicants.