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fenilsonani

3 karma · joined July 7, 2024

a cool person from NYC
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fenilsonani··on Show HN: Self-hosted email server for 2026 – single binary, CalDAV
Honestly if you need something battle-tested right now, those are solid choices.

I built this because I had specific pain points - didn't want to set up Postgres or MySQL just for email metadata, wanted calendar and contacts baked in for a complete Google Workspace replacement, and wanted dead simple config that still does DKIM/SPF/DMARC properly.

Future roadmap includes SendGrid-style stuff - API for transactional emails, webhooks. But the core idea stays: good architecture, solve real pain points, keep it simple and fast.

fenilsonani··on Show HN: Self-hosted email server for 2026 – single binary, CalDAV
Yeah you caught that - right now it just binds to all interfaces by default. Definitely need to add a bind_address option in the config. That's going on my list.

If you're on a multi-homed setup right now, firewall rules would be the workaround, but I hear you - it should be in the config properly.

Thanks for the feedback, this is exactly what I was hoping to get from posting here.

fenilsonani··on Show HN: Self-hosted email server for 2026 – single binary, CalDAV
I built this after Google Workspace pricing jumped again and I wanted full control over my email stack.

This is a self-hosted email server written in Go, shipped as a single binary. It supports IMAP (with IDLE), SMTP, DKIM, SPF/DMARC, and CalDAV, with modern defaults and minimal configuration.

The goal is something you can run on a small VPS for personal or small-team use without vendor lock-in.

I’d really appreciate feedback on the architecture, security model, and what you’d want to see next.