Lite
Free
Local sandbox
- Custom domains
- 50+ accounts
- 7+ day retention
- SMTP in
- REST API
- Catch-all and plus aliases
Pricing
Self-hosted email testing is free on this instance.
This clone does not include billing or paid plan enforcement. The cards mirror the smtp.dev plan layout so the product surface is familiar, but every tier below maps to the same local, self-hosted feature set.
Pro
Free
Self-hosted
- Multiple domains
- Large account sets
- 30+ day retention
- Message inspection
- SPF/DKIM/DMARC fields
- SSE updates
Max
Free
Your infrastructure
- No billing meter
- No hosted plan caps
- 90+ day retention configurable
- OpenAPI docs
- Raw source and attachments
- Sandboxed sending
Comparison
All listed features are included locally.
| Feature | Lite | Pro | Max |
|---|---|---|---|
| Domains | Included | Included | Included |
| Accounts | Included | Included | Included |
| Retention | Included | Included | Included |
| SMTP inbound | Included | Included | Included |
| REST API | Included | Included | Included |
| Message inspection | Included | Included | Included |
| Email audit fields | Included | Included | Included |
| Catch-all and aliasing | Included | Included | Included |
| OpenAPI and Swagger UI | Included | Included | Included |
No paid plans are implemented here. Storage, retention, and availability depend on your local configuration and the machine running this Flask instance.