It has been great for startups to be able to fire up instances on Amazon EC2 or Slicehost for next to nothing, but one thing that has gone down the drain in doing so is email deliverability. I try out a lot of new services all the time and at this point I would say that well over half of those new services don’t get their email messages into my inbox. Instead they get swallowed up by Postini. And because Postini is generally excellent (very few false positives), I rarely bother to check it. T...