Mailtrap vs Mailpit
Hosted staging inbox versus local-first capture.
What matters for SaaS product teams
A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.
| Priority | Mailtrap | Mailpit |
|---|---|---|
| Multi-tenant | Yes | No |
| Event stream | Yes | No |
| Suppressions API | Yes | No |
| Operating since | 2014 | Not published |
| Scheduling | No | No |
| Best published rate per 1,000 | Tiers not published in comparable form | Tiers not published in comparable form |
| Deliverability | Good production sending posture with logs, authentication, suppression handling, and dedicated IP options on higher plans. | Not applicable; capture-only. |
| Webhooks | Yes | No |
| Starts at | $15/mo for 10,000 sending | Free |
For a multi-tenant SaaS product running trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Mailtrap takes every priority that separates them here (multi-tenant support, event stream, the suppressions API, and webhook coverage), while Mailpit matches it on the rest. On entry price, Mailtrap offers $15/mo for 10,000 sending against Free from Mailpit. That ordering reflects this audience. Weigh the same table differently and the answer changes.
Side by side
| Feature | Mailtrap | Mailpit |
|---|---|---|
| Multi-tenant | Yes | No |
| Deliverability | Good production sending posture with logs, authentication, suppression handling, and dedicated IP options on higher plans. | Not applicable; capture-only. |
| Webhooks | Yes | No |
| Starts at | $15/mo for 10,000 sending | Free |
| Tagline | Originally a staging inbox, now a sender too. | Modern local SMTP catcher. |
| Free tier | 4,000/mo (sending), free testing tier | Free, MIT-licensed |
| Pricing model | tiered | self-hosted |
| API | Yes | Yes |
| SMTP | Yes | Yes |
| SDKs | node, python, go, ruby, php, elixir | None |
| Templates | basic | none |
| React Email | No | No |
| Inbound | No | No |
| Idempotency | No | No |
| Dedicated IP | Yes | No |
| DX score | 8/10 | 9/10 |
| Best for | Teams that want one vendor for staging-inbox plus production sending. | Replacing MailHog in any local or CI email-capture setup. |
Mailtrap
- ›Best-in-class staging inbox
- ›Spam, blacklist, and HTML check on captured emails
- ›Single product that covers testing and sending
- ›Generous free tier for both flows
- ›Sending product is younger than Postmark or SendGrid
- ›Reporting is less detailed than dedicated transactional providers
- ›Some testing features locked to higher plans
Mailpit
- ›Single Go binary or small Docker image with no runtime dependencies
- ›Reuses MailHog's 1025 and 8025 ports, so most existing configs work unchanged
- ›Views for rendered HTML, plain text, raw source, headers, and attachments
- ›Built-in HTML-compatibility check, link check, and spam-score view
- ›REST API and real-time inbox updates for automated tests
- ›Local development and staging only, not a production sender
- ›No hosted or shared team-inbox mode