Stalwart

All-in-one mail and collaboration server with modern protocols built in.

About Stalwart

Stalwart is an all-in-one mail and collaboration server written in memory-safe Rust. A single deployment replaces separate mail, calendar, contacts and file servers, speaking JMAP, IMAP, POP3 and SMTP plus CalDAV, CardDAV and WebDAV natively. Built-in spam and phishing filtering, mailbox encryption, automatic TLS and sender authentication are included, and it scales from one node to multi-region clusters with pluggable storage backends.

Stalwart website preview

Live preview of stalw.art via the WordPress mShots service — it can take a few seconds to generate on a first visit.

Stalwart: strengths & things to check

Strengths

Free tier available — you can start without paying (freemium model).
Covers mail server, self hosted, rust, collaboration — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

The full feature set sits behind a paid plan — check which limits the free tier carries on the official site before committing.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 565 tools in the Communication & Collaboration category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

Stalwart pricing

Pricing model	Freemium — a free tier lets you start, and paid plans are available if you need more.
Free access	Yes — free tier, paid upgrades available
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	stalw.art

Stalwart key facts

Category: Communication & Collaboration
Pricing: Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas: mail server, self hosted, rust, collaboration
Official site: stalw.art

Stalwart FAQ

How much does Stalwart cost?

Freemium — a free tier lets you start, and paid plans are available if you need more. Current plans and prices are listed on the official site (stalw.art).

What is Stalwart used for?

All-in-one mail and collaboration server with modern protocols built in. Its focus areas in the Communication & Collaboration category: mail server, self hosted, rust, collaboration.

Where can I try Stalwart?

On its official site, stalw.art — the Visit Official Site button above goes straight there.

Stalwart vs alternatives

	Stalwart	Courier Mail Server	docker-mailserver	Dovecot
Pricing	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Freemium — a free tier lets you start, and paid plans are available if you need more.
Focus areas	mail server, self hosted, rust, collaboration	mail server, smtp, imap, self hosted	mail server, docker, email, self hosted	email, imap, mail server, self hosted, open source
Official site	stalw.art	courier-mta.org	docker-mailserver.github.io	dovecot.org
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Communication & Collaboration category

Chat, video meetings, and messaging apps that keep teams connected. The Communication & Collaboration category on Tools Hub currently lists 565 tools. Alongside Stalwart, it includes SIPCAPTURE Homer, Misago, MiroTalk SFU, Courier Mail Server.

FreemiumCommunication & Collaborationmail-serverself-hostedrustcollaboration

Alternatives to Stalwart

Tools in the same Communication & Collaboration category that share focus areas with Stalwart — worth comparing before you commit:

Communication & Collaboration

Courier Mail Server

Integrated mail and groupware server based on open protocols

Freemail-serversmtpimapself-hosted

Communication & Collaboration

docker-mailserver

Production mail server packaged with Docker

Freemail-serverdockeremailself-hosted

Communication & Collaboration

Dovecot

The secure, high performance email server

Freemiumemailimapmail-serverself-hosted

Communication & Collaboration

EmailRelay

Lightweight SMTP store-and-forward mail server with POP access

Freeemailsmtpmail-serverself-hosted

Communication & Collaboration

iRedMail

Full-featured open-source mail server solution based on Postfix and Dovecot

Freemail-serveremailself-hostedopen-source

Communication & Collaboration

Mail-in-a-Box

Turn a fresh Ubuntu server into a working mail server with one command

Freeemailmail-serverself-hostedubuntu

More in Communication & Collaboration

Comparing tools in the Communication & Collaboration category? These related listings are worth a look: SIPCAPTURE Homer — Open-source VoIP and RTC capture, analysis and monitoring platform; Misago — Complete, featured and modern forum solution; MiroTalk SFU — Free browser based real-time video calls, simple, secure, fast.