Mail-in-a-Box vs Stalwart Mail Server
Mail-in-a-Box
mailinabox.email
Stalwart Mail Server
stalwart.emailSide by side
| Figure | Mail-in-a-Box | Stalwart Mail Server |
|---|---|---|
| Price from | — | $0.09/mo |
| Free plan | — | 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 | 0 | 16 |
| Spec score · Email Server Software | 7.5 (#18) | 8.0 (#12) |
| Spec score · Mail Server Software | 7.5 (#27) | 8.0 (#15) |
| Security | The control panel supports TOTP-based two-factor authentication, and the security guide says credentials are sent through SSH/TLS rather than in the clear. | 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
Mail-in-a-Box
Mail-in-a-Box has no write-up on Specifiction yet; its figures are above.
Stalwart Mail Server
Stalwart Mail Server has no write-up on Specifiction yet; its figures are above.