Stalwart
Stalwart is a modern, all-in-one mail and collaboration server written in Rust for security and performance. It bundles SMTP, IMAP, JMAP, POP3, CalDAV, CardDAV, and WebDAV into a single binary with a unified configuration. Features include a built-in spam and phishing filter with LLM-driven analysis, DMARC/DKIM/SPF/ARC authentication, encryption at rest with S/MIME or OpenPGP, automatic TLS via ACME, full-text search in 17 languages, Sieve scripting, and a web-based admin dashboard. It supports pluggable storage backends (RocksDB, FoundationDB, PostgreSQL, MySQL, SQLite, S3, Redis) and scales from a single instance to thousands of nodes with built-in clustering, load balancing, and fault tolerance.
Quick Info
| Field | Value |
|---|---|
| Category | Communication |
| Subcategory | |
| Default Port | 25 |
| Docker Image | ghcr.io/stalwartlabs/stalwart:v0.15.5 |
| Dependencies | Docker |
| OS Support | Ubuntu 22.04, Ubuntu 24.04, Debian 12 |
Links
- 🌐 Website
- 📚 Documentation
- 💻 GitHub