- Home
- Mail Server Software
- Stalwart Mail Server
On the recordRead 30 Sep 202614 facts
Stalwart Mail Server
London, United Kingdom
Plans and prices
Community
Free
AGPL-3.0 licensed · Self-hosted deployment · Standard mail and collaboration protocols
Read 21 Sep 2026 · stalwart.email
Enterprise: 25–499 mailboxes
$2.40a year
25–499 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 500–999 mailboxes
$2.04a year
500–999 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 1,000–4,999 mailboxes
$1.74a year
1,000–4,999 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 5,000–10,000 mailboxes
$1.48a year
5,000–10,000 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 10,000–49,999 mailboxes
$1.25a year
10,000–49,999 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 50,000–99,999 mailboxes
$1.09a year
50,000–99,999 mailboxes
Read 21 Sep 2026 · stalwart.email
Enterprise: 100,000+ mailboxes
Priced on request
100,000+ mailboxes
Read 21 Sep 2026 · stalwart.email
Community Edition
Free
Community Edition
Read 30 Sep 2026 · stalwart.email
On the record
- Admin
- The browser-based admin console includes dashboards, live tracing, account and domain management, queue and report visualization, and server configuration.stalwart.email · read 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.stalwart.email · read 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.stalwart.email · read 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.stalwart.email · read 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.stalwart.email · read 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.stalwart.email · read 30 Sep 2026
- Enterprise trial
- The pricing page offers a 30-day Enterprise trial with full access to Enterprise features for evaluation.stalwart.email · read 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.stalwart.email · read 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.stalwart.email · read 30 Sep 2026
- Product
- Stalwart is an open-source mail and collaboration server for email, calendars, contacts, and shared files.stalwart.email · read 30 Sep 2026
- Protocols
- It supports JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV, and WebDAV.stalwart.email · read 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.stalwart.email · read 30 Sep 2026
- Spam protection
- Built-in spam and phishing protection includes a statistical filter, blocklists, sender reputation, and AI-driven analysis.stalwart.email · read 30 Sep 2026
