ZeroSMTP: Lightweight and secure self-hosted SMTP relay

I’m Tomasz, the maintainer of ZeroSMTP. I built this project because I was tired of wrestling with overly complex and bloated configurations just to handle basic email delivery for internal applications and infrastructure. I wanted something lightweight, fully self-hosted, secure, and straightforward—something that just works out of the box. Whether you're setting up notifications for monitoring tools, running internal services, or simply want complete control over your mail flow, ZeroSMTP is designed to keep things simple and predictable. You can check out the full documentation here: https://docs.msgwing.com/ I'd love to hear your thoughts, feedback, or any interesting use cases you have in mind. Ask me anything!