Stalwart Mail Collaboration Server

---
name: "Stalwart All-in-One Mail and Collaboration Server"
slug: "stalwart-mail-collaboration-server"
description: "Stalwart is an open-source mail and collaboration server written in Rust that provides JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV, and WebDAV support. It enables agents to deploy and manage self-hosted email infrastructure with built-in spam filtering, DKIM/DMARC/SPF authentication, and full calendar and contact synchronization."
github_stars: 12164
verification: "security_reviewed"
source: "https://github.com/stalwartlabs/stalwart"
category: "Calendar, Email & Productivity"
framework: "Multi-Framework"
tool_ecosystem:
  github_repo: "stalwartlabs/stalwart"
  github_stars: 12164
---

# Stalwart All-in-One Mail and Collaboration Server

Stalwart is an open-source mail and collaboration server written in Rust that provides JMAP, IMAP4, POP3, SMTP, CalDAV, CardDAV, and WebDAV support. It enables agents to deploy and manage self-hosted email infrastructure with built-in spam filtering, DKIM/DMARC/SPF authentication, and full calendar and contact synchronization.

## Installation

Requirements and caveats from upstream:
- **Kubernetes**, **Apache Mesos** and **Docker Swarm** support for automated scaling and container orchestration.
- [Docker](https://stalw.art/docs/install/platform/docker)

Basic usage or getting-started notes:
- [Linux / MacOS](https://stalw.art/docs/install/platform/linux)
- [Windows](https://stalw.art/docs/install/platform/windows)
- All documentation is available at [stalw.art/docs](https://stalw.art/docs/install/get-started).

- Source: https://github.com/stalwartlabs/stalwart
- Extracted from upstream docs: https://raw.githubusercontent.com/stalwartlabs/stalwart/HEAD/README.md

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/stalwart-mail-collaboration-server/)