I’m sure someone is working on something like this, but wouldn’t it be cool to eliminate mail servers altogether and just communicate directly using RSS 2.0?

Rather than open our inboxes to spam from everywhere, we simply subscribe to the people we want to hear from, create feeds for people we want to communicate with, deliver attachments as enclosures, and…well, that about takes care of it, doesn’t it?

Sounds pretty bulletproof to me.