Postal vs Sympa
| Tagline | Self-hosted mail delivery platform, a SendGrid/Mailgun alternative | Scalable multilingual mailing list manager for large organizations |
| Category | Email & Newsletters | Email & Newsletters |
| Replaces | SendGrid | Mailchimp, Gmail / Google Workspace |
| GitHub stars | 17k | 300 |
| Language | Ruby | Perl |
| License | MIT | GPL-2.0 |
| Self-host difficulty | 4/5 Involved | 4/5 Involved |
| Deploy options | Docker Docker Compose Manual | Manual |
| Managed hosting | ||
| Last updated | 18 days ago | 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.
Postal
- You are responsible for IP reputation, warmup, and deliverability
- Requires MariaDB, RabbitMQ, and DNS/DKIM configuration to run
- No marketing-campaign UI — it is a delivery engine, not a newsletter builder
- Less hand-holding than managed providers for spam/blocklist issues
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
Both are a similar lift to self-host; choose Postal for the larger community and ecosystem. Postal has seen more recent development. Open each guide below for deploy steps and the full feature gap.