Ask HN: Best (minimal) customer support software?

Hi HN,

Curious what people's opinions are here on best practices & tools to setup a simple, manageable email support channel (for a SaaS).

There seem to be a million options out there and a lot of bloated/complex software.

Looking to transition away from a simple email client but ideally to a minimal, works-out-of-the-box solution.

Thoughts/experiences?