[ianhawes]

I had the exact same experience with Sparkpost. They were used to send receipts for purchases and not any sort of email marketing.

We started out on their free plan. While it wasn't as great as Mandrill (couldn't view outgoing content, for example) they didn't mess up the email format or inject any weird links.

We expanded to their paid plan as a result of our volume about a month later. Roughly 2-3 weeks after that, we received an automated notice at 1 AM on a Friday that our account had been suspended and that we should contact the abuse group and that they would reply within "2 days".

Not only did they stop our outgoing emails, but they didn't even bother queueing the ones our app was sending them. In fact, the worst part was that their API was returning 200 OK for emails that weren't sent, so our system didn't bother putting them in our failed jobs DB.

I emailed just about everyone in that company that I could find to no avail. The "abuse team" replied at around 4pm that day that our account was suspended for "multiple complaints" and that they were willing to give us "another chance" and subsequently reinstated us.

We started a migration back to Mandrill.

[posabsolute]

I'm surprised so many people only send to 1 Email Service. These services sometimes go down, sometimes slow down, having 2 active account and having an easy way to switch in between (read even automatic) should be an applied best practice.

[tbrooks]

Why go back to Mandrill? Why not go to SES?