Hi, thank you for creating/open-sourcing plausible.io!

It's just what I wanted for personal/hobby projects and very easy to setup / migrate to it (I think it took me less than 1 hour to set it up and migrate all my personal projects from google analytics)

Some questions popped up, most of them already have issues with the self-hosted label, but one I couldn't find is: how do I have to set the environment variables if my email server doesn't require auth?

I noticed in the config auth is set to :always. It appears there's also a :if_available setting documented in bamboo_smtp -- assuming it does what I think, would it be possible to use that or, probably even better, make the option configurable?

Not sure how easy it is, but including a "send me a test email" button would be very helpful