Stalwart Mail Server
The facts below are what the maker publishes about Stalwart Mail Server, checked and dated. Our editors have not written about it yet.
Plans and prices
From Stalwart Mail Server's own pricing page, checked 30 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Community Edition | Free | Community Edition · Free under AGPL-3.0 |
| Enterprise — 50,000 to 99,999 mailboxes | $1.09 a year | 50,000 to 99,999 mailboxes · USD 1.09 per mailbox per year |
| Enterprise — 10,000 to 49,999 mailboxes | $1.25 a year | 10,000 to 49,999 mailboxes · USD 1.25 per mailbox per year |
| Enterprise — 5,000 to 10,000 mailboxes | $1.48 a year | 5,000 to 10,000 mailboxes · USD 1.48 per mailbox per year |
| Enterprise — 1,000 to 4,999 mailboxes | $1.74 a year | 1,000 to 4,999 mailboxes · USD 1.74 per mailbox per year |
| Enterprise — 500 to 999 mailboxes | $2.04 a year | 500 to 999 mailboxes · USD 2.04 per mailbox per year |
| Enterprise — 25 to 499 mailboxes | $2.40 a year | 25 to 499 mailboxes · USD 2.40 per mailbox per year |
| Enterprise — 100,000 mailboxes and beyond | Priced on request | 100,000 mailboxes and beyond · Obtain quote |
The facts
Each one read from Stalwart Mail Server's own pages, with the date it was checked.
What it does
- Admin
- The browser-based admin console includes dashboards, live tracing, account and domain management, queue and report visualization, and server configuration.checked 30 Sep 2026
- Audit
- A published report says Radically Open Security conducted a penetration test of Stalwart v0.13.2 in September 2025 and found two high-severity and five low-severity issues.checked 30 Sep 2026
- Community edition
- The Community Edition is free under AGPL-3.0 and offers community support through a support portal and community channels.checked 30 Sep 2026
- Deployment
- Stalwart can run as one node or as a cluster across regions, and its site describes it as designed to scale to millions of mailboxes.checked 30 Sep 2026
- DNS and observability
- Stalwart lists automated DNS integrations for providers including Cloudflare, AWS Route 53, Google Cloud DNS, and Azure DNS, plus OpenTelemetry export and a Prometheus endpoint.checked 30 Sep 2026
- Enterprise pricing limits
- Only user and group mailboxes count toward Enterprise pricing; mailing lists and aliases are not billed, and each tier is billed at its own rate.checked 30 Sep 2026
- Integrations
- Listed integrations include LDAP, Active Directory, OIDC, SQL directories, RocksDB, FoundationDB, PostgreSQL, MySQL, SQLite, S3-compatible storage, Azure Blob, and search engines including Meilisearch, Elasticsearch, and OpenSearch.checked 30 Sep 2026
- Premium support
- Enterprise subscriptions of 150 mailboxes or more include Premium Support with priority response, expedited bug fixing, and product-roadmap influence.checked 30 Sep 2026
- Product
- Stalwart is an open-source mail and collaboration server for email, calendars, contacts, and shared files.checked 30 Sep 2026
- Protocols
- It supports JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV, and WebDAV.checked 30 Sep 2026
- Security
- The product page lists mailbox encryption at rest with S/MIME or OpenPGP, DANE, MTA-STS, automatic ACME TLS, DKIM key rotation, access controls, rate limiting, and automatic IP banning.checked 30 Sep 2026
- Spam protection
- Built-in spam and phishing protection includes a statistical filter, blocklists, sender reputation, and AI-driven analysis.checked 30 Sep 2026
Money
- Enterprise trial
- The pricing page offers a 30-day Enterprise trial with full access to Enterprise features for evaluation.checked 30 Sep 2026
The company
- Headquarters
- London, United Kingdomchecked 23 Sep 2026
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