Variables to adjust are DefaultStateDirectory and DefaultRuntimeDirectory defined maddy.go. Need to account for the fact build.sh may be setting it using -X linker flag.

Homebrew tap is way out of date, goreleaser should be able to generate a new one. Not sure if it will help with launching Inbucket at boot.

When using default settings, users will experience fewer bugs. So when there are issues, resetting to the default can be a quick fix/workaround. And this can lead to better bug reports.

We did this in Tiki for http://doc.tiki.org/Site-configuration-preferences. I got used to it and miss it in other applications. Basically, it shows user which settings have been modified and lets them reset to

Personally whenever I want to test lettre I send an email addressed to myself. Currently FileTransport saves emails in a custom json, which isn't that useful, but what if we instead saved it into an .eml?

This format is supported by email clients, making it very easy to test creating a message without having to actually send it.