I built a Mandrill clone based on SES, Google AppEngine, Phoenix/Elixir. I moved everything there and it works pretty well, planning to open source it at some point.

How about you just open source it as a blog post and let someone else's clean it up. Heck even blogging the architecture and the issues would help.

Also are you using Amazon ses with Google app engine? Seems odd.

Google doesn't offer a transactional email service.

Google have no equivalent to ses.

That sounds awesome! Please post a show hn when you do.

Sure, thank you :)

You might have a viable saas there. Check out email octopus and moonmail (also open source)

Thank you! Moon mail looks interesting. Will check them out in detail later as to what they're using.