poste.io vs Stalwart Mail Server
poste.io
poste.io
Stalwart Mail Server
stalwart.emailSide by side
| Figure | poste.io | Stalwart Mail Server |
|---|---|---|
| Price from | $29.08/mo | $0.09/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 16 |
| Spec score · Email Server Software | 8.0 (#10) | 8.0 (#12) |
| Spec score · Mail Server Software | 8.0 (#13) | 8.0 (#15) |
| Headquarters | Klatovy, Czech Republic | London, United Kingdom |
| Integrations | The documentation describes an Elasticsearch integration for PRO log viewing and names Uptime Kuma, Prometheus, and Grafana as external monitoring systems that can use its monitoring API. | 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. |
| Product | Poste.io is a self-hosted email server with web administration, webmail, spam protection, and mail server components in one Docker container. | Stalwart is an open-source mail and collaboration server for email, calendars, contacts, and shared files. |
| Security | The feature page states that TLS is used on every protocol, passwords use salted SHA512, and SPF, DKIM, DMARC, and SRS are supported. | 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. |
Plans
Stalwart Mail Server
- CommunityFree
- Enterprise: 25–499 mailboxes$2.40 a year
- Enterprise: 500–999 mailboxes$2.04 a year
- Enterprise: 1,000–4,999 mailboxes$1.74 a year
- Enterprise: 5,000–10,000 mailboxes$1.48 a year
- Enterprise: 10,000–49,999 mailboxes$1.25 a year
- Enterprise: 50,000–99,999 mailboxes$1.09 a year
- Enterprise: 100,000+ mailboxesPriced on request
- Community EditionFree
- Enterprise — 50,000 to 99,999 mailboxes$1.09 a year
In their own words
Stalwart Mail Server
Stalwart Mail Server has no write-up on Specifiction yet; its figures are above.