Email PR

I'm an adviser to Pixsy, a very interesting video search company. I've known the CEO, Chase Norlin, since my abuzz days. He was at Sony and Sony was a customer of abuzz.  Yesterday, I got another email blast from Chase -- he probably sends out an email blast every other month. I wrote him back that I thought he was the master of email PR. His actions got me thinking about using email as a PR vehicle (duh?). Not very insightful, kinda obvious, and really powerful. I wonder why more CEOs don't follow Chase's behavior....myself included.