1) How is this different than <a href="http://www.postmarkapp.com" rel="nofollow">http://www.postmarkapp.com</a> or <a href="http://www.sendgrid.com" rel="nofollow">http://www.sendgrid.com</a>?<p>2) What will the pricing be? No way am I signing up for a free beta and then have to deal with a crazy high price where I will have to re-do part of my app to switch away. This is still on HN: <a href="http://jamie.ideasasylum.com/2010/07/kissmetrics-bizarre-pricing" rel="nofollow">http://jamie.ideasasylum.com/2010/07/kissmetrics-bizarre-pri...</a>