This[1] is the heart of it. The solution here allows me to support inbound and outbound email for several domains, be super robust, and roughly compliant with rules like GDPR. This is as “industrial strength” as anything I’ve seen.

I have nothing public to show on the mail reading side, but once the data is available it’s remarkably easy to present.

[1] https://github.com/mlhpdx/email-delivery

Oh, and it’s basically free to run.