Keila vs Mailtrain
| Feature | Keila | Mailtrain |
|---|---|---|
| Category | Email Marketing | Email Marketing |
| Sub-category | Newsletter | Newsletter |
| Maturity | stable | stable |
| Complexity | intermediate | intermediate |
| Performance tier | medium | medium |
| License | AGPL-3.0 | GPL-3.0 |
| License type | copyleft | copyleft |
| Pricing | fully free | fully free |
| GitHub stars | 1.5K | 6.0K |
| Contributors | 0 | 0 |
| Commit frequency | weekly | weekly |
| Plugin ecosystem | none | none |
| Docs quality | good | good |
| Backing org | Pentacent | Mailtrain |
| Funding model | community | community |
| Min RAM | 512 MB | 512 MB |
| Min CPU cores | 1 | 1 |
| Scaling pattern | single_node | single_node |
| Self-hostable | Yes | Yes |
| K8s native | No | No |
| Offline capable | No | No |
| Vendor lock-in | none | none |
| Languages | Elixir | Node.js |
| API type | REST | REST |
| Protocols | HTTP | HTTP |
| Deployment | docker | docker, npm |
| SDK languages | — | — |
| Team size fit | small, medium | small, medium |
| First release | 2020 | 2020 |
| Latest version | — | — |
When to use Keila
- ✓ GDPR-compliant newsletter sending
- ✓ Privacy-first email campaigns
- ✓ Subscriber form building with captcha
When to use Mailtrain
- ✓ Automated newsletter workflows
- ✓ RSS-to-email campaigns
- ✓ Custom subscriber field management
Keila anti-patterns
- ✕ Smaller community than Listmonk
- ✕ Elixir-based — niche for contributors
- ✕ Fewer integrations
Mailtrain anti-patterns
- ✕ Development less active
- ✕ Node.js dependency chain
- ✕ Less polished than Listmonk