I'm leading Postmark's API development. Amazon SES is clearly going to be the low cost provider; nobody's going to compete on price. Time will tell what their actual deliverability rates are, what their spam handling really looks like, etc. I agree that price is a weak argument in any market. Now that we're at bottom, we'll see lots of innovation in this space, and everybody will win as a result. We have a great roadmap ahead with Postmark.