[cnagele]

Thinking of "email delivery as a commodity" is the first mistake people make - all ESPs are not created equal. If this were the case, there would not be such a huge variance in not only getting to the Inbox, but how fast you get to the Inbox. This is why we've focused on transactional only, knowing fully well we will grow slower as a business (and why we are more expensive), but have superior delivery since transactional email has a much higher engagement rate and reputation with ISPs.

The entire idea of "dumb pipe" or "commodity" needs to go away. There is a reason why companies like Asana, Desk, and Minecraft chose Postmark, since their email is critical to their business and choosing the right providers makes a real difference. Now, if your emails are not critical, I can see how any service might work. I have yet to come across a product owner who is comfortable letting their customers wait for their transactional emails though - no matter the size of product or company.

Full disclosure, I'm the founder of Postmark - the best "dumb pipe commodity" money can buy.

[hvenk]

SparkPost/MessageSystems claims to have the highest inbox rate in the space, and their customer list backs this up. It's much more impressive than Asana, Desk, and Minecraft (think LinkedIn, Facebook, Zillow, Pinterest, etc).

They absolutely recognize that ESPs are a commodity, even reselling delivery to ExactTarget, Responsys, etc, as the "pipe". It's hard to believe your reasoning when the industry leader is saying something different.

[cnagele]

SparkPost's claims are misleading here.

LinkedIn, Facebook, Twitter, etc do not use Sparkpost, they use their on-premise installable software that many ESPs use and pay tens or hundreds of thousands for, which indeed is a dumb pipe MTA. Those big companies still have a full-time staff managing delivery and infrastructure. It's basically a replacement to Postfix, not a full fledge, multi-datacenter, multi-tenant hosted application to support many thousands of concurrent customers.

A hosted "product" is a different animal. Sure, it needs to have great delivery, but the work that goes into making it easy to troubleshoot when you have issues, minimize developer work, and bring useful data back into your application is something else. This only becomes painfully obvious when you deeply rely on email for your business.

There is a reason why Sparkpost left Postmark out of their comparison. We have the same data sources (eData), and we came out on top.

[1] http://pages.sparkpost.com/Big-Rewards-WP-Download-Landing-P...