Working on an email hosting company. Stack is Kotlin, Postgres, Docker, AWS. It's likely been helpful because it's a stack I'm good with, and it has very matur

Working on an email hosting company. Stack is Kotlin, Postgres, Docker, AWS. It's likely been helpful because it's a stack I'm good with, and it has very mature tooling and libraries (via JVM). The alternative was basically C, which has higher quality mailserver libraries but seemed a lot harder to work with from my point of view.