This is an interesting time in the transactional ESP market. Mandrill (operated by MailChimp) recently announced that they were eliminating their stand-alone offering and instead will be incorporated as an add-on feature of MailChimp’s paid, flagship email marketing service.

We have a lot of respect for MailChimp. They’re a great company, and we admire the work they do making full-service email marketing accessible to all kinds of customers. We also understand what their CEO said in his announcement letter about a “fit” issue with the Mandrill product. Transactional email isn’t the business they’re in.

This sort of change always is a hard decision for a company to make. Understanding that not all of Mandrill’s customers have a need for the full-service offering, MailChimp is recommending SparkPost as a Mandrill alternative for developers looking for a transactional email provider.

In fact, SparkPost announced last week a previously-planned change to our pricing structure. I’m really excited about this pricing model. It’s a win for our customers, and it’s a win for our business model.

These pricing plans mean that SparkPost is matching (and even beating) the rates Mandrill customers have been paying. That’s really good news. But I want to make a further commitment to you today: should the terms of our free tier of pricing ever change in the future, I promise we will nevertheless honor it for any customer currently enrolled at that tier, for the life of that account.

And for anyone who wonders if it’s really possible for SparkPost to keep this promise, the answer, unequivocally, is yes.

Giving developers the tools to do great things with transactional email is hard-wired in our DNA. It’s who we are, and our love for developers runs deep—most of us here are developers (or in my case, former developers) ourselves! I’m proud of how our team at SparkPost has risen to the occasion to support the Mandrill developer community, and I’m thrilled we’ve also gotten the pricing part of that right.

Whether you take us up on our 100K free emails per month plan, or a paid level of service, we’d really like to have you as a customer. I look forward to working together to build something awesome.

—Phillip