Stalwart Mail Server vs Sympa
| Tagline | Modern all-in-one mail server with JMAP, IMAP4, and SMTP in a single Rust binary | Scalable multilingual mailing list manager for large organizations |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | Gmail / Google Workspace, SendGrid, Mailchimp | Mailchimp, Gmail / Google Workspace |
| GitHub stars | 15k | 315 |
| Language | Rust | Perl |
| License | AGPL-3.0 | GPL-2.0 |
| Self-host difficulty | 3/5 Moderate | 4/5 Involved |
| Deploy options | Docker Docker Compose Manual | Manual |
| Managed hosting | ||
| Last updated | yesterday | 1 month ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Stalwart Mail Server
- No built-in newsletter/broadcast campaign tooling
- Web admin UI is functional but less refined than commercial email service dashboards
- Third-party anti-virus (ClamAV) integration requires additional setup
- Community support only on the free tier; paid support plans are limited
Sympa
- Perl stack and complex config make setup challenging
- No modern marketing analytics or A/B testing
- Web UI is functional but not modern by current standards
Bottom line
Choose Stalwart Mail Server if you want the lower-effort setup; choose Stalwart Mail Server for the larger community and ecosystem. Stalwart Mail Server has seen more recent development. Open each guide below for deploy steps and the full feature gap.
Stalwart Mail Server
Modern all-in-one mail server with JMAP, IMAP4, and SMTP in a single Rust binary