I've done something similar for my side project which needs to receive emails. My side project is a monitoring tool, and inbound emails is one way of sending "I

I've done something similar for my side project which needs to receive emails. My side project is a monitoring tool, and inbound emails is one way of sending "I'm alive" messages to it. Link in profile. I started with Mandrill inbound emails. Friendly UI, easy to understand, works as advertised. Then I moved to AWS SES for inbound emails. I wrote a small Lambda function which dissects the email and forwards it to my HTTP endpoint. With usage growing, SES was getting expensive as well. So I wrote a SMTP server in Go using this: https://github.com/mhale/smtpd https://github.com/mhale/smtpd It's very basic, doesn't support SSL, but seems to work OK in practice. My inbound email handling is now basically free.