I've been doing lots of little Scala projects that want to send e-mail, including HTML e-mail. The Scala mail lib I found was a bit elaborate (based on cats effects) for my purposes. JavaMail (now Jakarta mail) is annoying to use directly.

So, I wrote a little mailutil library that is pretty trivial to send mail with, and straightforward to configure.

Maybe someone else finds it fun. github.com/swaldman/mailutil