[specialp]

We weren't free tier spammers either and we paid them a good amount of money for Mandrill. They changed their TOS to make it not possible to send out bulk mailings without using their managed and much more expensive MailChimp service. We are not spammers, we are a non-profit that sends digest emails of our content to those who specifically subscribe and confirm. We also have our own mailing system so we do not need the features MailChimp provides, we just need well instrumented SMTP.

We then switched to Amazon SES but still have a bitter feeling about MailChimp and will move our services that are using the full MailChimp product. Some of the change was indeed to control spammers, but when you are forcing over enterprises sending 100's of thousands of emails without complaint, that starts crossing the line where you want to better monetize your product. Giving your customers 60 days to engineer a different solution after they invested in your product is not good business.