Freedom251 › Mail Server Software
Stalwart Mail Server
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Community | Free under AGPL-3.0 · AGPL-3.0 licensed · Self-hosted deployment · Standard mail and collaboration protocols | Free |
| Enterprise: 25–499 mailboxes | Annual rate; tiered pricing · 25–499 mailboxes | $2.40 a year |
| Enterprise: 500–999 mailboxes | Annual rate; tiered pricing · 500–999 mailboxes | $2.04 a year |
| Enterprise: 1,000–4,999 mailboxes | Annual rate; tiered pricing · 1,000–4,999 mailboxes | $1.74 a year |
| Enterprise: 5,000–10,000 mailboxes | Annual rate; tiered pricing · 5,000–10,000 mailboxes | $1.48 a year |
| Enterprise: 10,000–49,999 mailboxes | Annual rate; tiered pricing · 10,000–49,999 mailboxes | $1.25 a year |
| Enterprise: 50,000–99,999 mailboxes | Annual rate; tiered pricing · 50,000–99,999 mailboxes | $1.09 a year |
| Enterprise: 100,000+ mailboxes | 100,000+ mailboxes | On request |
The first 8 of 16 plans, as stalwart.email lists them, read 21 Sept 2026. The maker's own page has the final word. Every plan
Facts from Stalwart Mail Server's own pages
- Admin
- The browser-based admin console includes dashboards, live tracing, account and domain management, queue and report visualization, and server configuration. · stalwart.email, 30 Sept 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, 30 Sept 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, 30 Sept 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, 30 Sept 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, 30 Sept 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, 30 Sept 2026
- Enterprise trial
- The pricing page offers a 30-day Enterprise trial with full access to Enterprise features for evaluation. · stalwart.email, 30 Sept 2026
- Headquarters
- London, United Kingdom · stalwart.email, 23 Sept 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, 30 Sept 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, 30 Sept 2026
- Product
- Stalwart is an open-source mail and collaboration server for email, calendars, contacts, and shared files. · stalwart.email, 30 Sept 2026
- Protocols
- It supports JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV, and WebDAV. · stalwart.email, 30 Sept 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, 30 Sept 2026
- Spam protection
- Built-in spam and phishing protection includes a statistical filter, blocklists, sender reputation, and AI-driven analysis. · stalwart.email, 30 Sept 2026
Where Stalwart Mail Server stands on Freedom251
- Mail Server Software#21 of 34