# Mailpit vs Testmail.app

**Leader by Vioscale score:** Testmail.app

| Attribute | Mailpit | Testmail.app |
|---|---|---|
| **Vioscale score** | 39.6 (23% (low)) | 82.2 (42% (low)) |
| activity.commits_last_30d | 36 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 10,208 | - |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | A minimal email testing tool that intercepts SMTP traffic and provides a web UI plus REST API for validating and testing email functionality during development. | Provides temporary, addressable mailboxes and APIs enabling developers to capture and verify emails in automated test workflows and CI/CD pipelines without contacting real users. |
| integrations.count | 1 | 3 |
| integrations.list | `[{"name":"SpamAssassin"}]` | `[{"name":"Microsoft Entra ID"},{"name":"Okta"},{"name":"OneLogin"}]` |
| language.primary | Go | - |
| license.spdx | MIT | - |
| market.availability | - | `{"hqCountry":"CA","primaryMarkets":["US","CA"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | - | `{"type":"subscription","plans":[{"free":true,"name":"Free","summary":"Free forever","features":["100 emails/month","Unlimited users, email addresses, and mailboxes"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"For side projects","contactSales":false,"includedLimits":{"emails_per_month":"100"}},{"free":false,"name":"Essential","summary":"$12/month or $9/month billed annually","features":["10,000 emails/month","Full API access"],"components":[{"kind":"fixed","amount":12,"period":"month","currency":"USD"}],"description":"For small projects","contactSales":false,"includedLimits":{"emails_per_month":"10,000"}},{"free":false,"name":"Pro","summary":"$39/month or $29/month billed annually","features":["50,000 emails/month","Unlimited custom namespaces","Visual email viewer","Priority support"],"components":[{"kind":"fixed","amount":39,"period":"month","currency":"USD"}],"description":"Most popular","contactSales":false,"includedLimits":{"emails_per_month":"50,000"}},{"free":false,"name":"Enterprise","summary":"$129/month or $89/month billed annually","features":["1,000,000 emails/month","SSO with SAML 2.0 or OIDC","SCIM support","Enterprise invoicing","99.99% uptime SLA"],"components":[{"kind":"fixed","amount":129,"period":"month","currency":"USD"}],"description":"For power users","contactSales":false,"includedLimits":{"emails_per_month":"1,000,000"}},{"free":false,"name":"Unlimited","summary":"$299/month or $269/month billed annually","features":["10,000,000 emails/month","All Enterprise features","Unlimited custom domains","Custom contracts with enterprise compliance support"],"components":[{"kind":"fixed","amount":299,"period":"month","currency":"USD"}],"description":"Best of everything","contactSales":false,"includedLimits":{"emails_per_month":"10,000,000"}}],"summary":"From free to $299/month. Free tier with 100 emails/month. 14-day trial.","currency":"USD","freeTier":true,"sourceUrl":"https://testmail.app/pricing/","retrievedAt":"2026-08-18T22:37:35.186Z","freeTrialDays":14,"startingPrice":{"amount":12,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | - | yes |
| pricing.model | - | freemium |
| pricing.price_level | - | low |
| pricing.starting_price | - | `{"amount":12,"currency":"USD"}` |
| pricing.transparent | - | yes |
| release.cadence_days | 11 | - |
| release.history | `[{"url":"https://github.com/axllent/mailpit/releases/tag/v1.31.0","date":"2026-08-22T00:00:16Z","type":"stable","version":"v1.31.0"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.7","date":"2026-08-08T09:51:14Z","type":"stable","version":"v1.30.7"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.6","date":"2026-07-28T04:08:26Z","type":"stable","version":"v1.30.6"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.5","date":"2026-07-20T04:18:08Z","type":"stable","version":"v1.30.5"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.4","date":"2026-07-09T03:37:30Z","type":"stable","version":"v1.30.4"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.3","date":"2026-06-27T09:32:36Z","type":"stable","version":"v1.30.3"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.2","date":"2026-06-17T03:38:53Z","type":"stable","version":"v1.30.2"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.1","date":"2026-05-28T10:02:23Z","type":"stable","version":"v1.30.1"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.30.0","date":"2026-05-14T05:00:22Z","type":"stable","version":"v1.30.0"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.7","date":"2026-04-16T06:01:06Z","type":"stable","version":"v1.29.7"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.6","date":"2026-04-05T10:03:15Z","type":"stable","version":"v1.29.6"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.5","date":"2026-03-29T04:48:58Z","type":"stable","version":"v1.29.5"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.4","date":"2026-03-22T04:57:48Z","type":"stable","version":"v1.29.4"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.3","date":"2026-03-10T02:32:01Z","type":"stable","version":"v1.29.3"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.2","date":"2026-02-24T23:31:43Z","type":"stable","version":"v1.29.2"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.1","date":"2026-02-13T08:02:33Z","type":"stable","version":"v1.29.1"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.29.0","date":"2026-02-01T03:13:50Z","type":"stable","version":"v1.29.0"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.28.4","date":"2026-01-24T21:08:56Z","type":"stable","version":"v1.28.4"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.28.3","date":"2026-01-18T08:38:39Z","type":"stable","version":"v1.28.3"},{"url":"https://github.com/axllent/mailpit/releases/tag/v1.28.2","date":"2026-01-10T03:21:02Z","type":"stable","version":"v1.28.2"}]` | - |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.gdpr | - | yes |
| security.vulnerabilities | `{"count":13,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Faxllent%2Fmailpit&per_page=100","last_12m":13,"max_severity":"HIGH"}` | - |

## Capabilities (Email Testing Dev)

| Capability | Mailpit | Testmail.app |
|---|:--:|:--:|
| **Capabilities** |  |  |
| API assertions | - | - |
| Rendering preview | - | - |
| Spam score check | - | - |
| Blocklist deliverability check | - | - |
| SMS testing | - | - |
| Production sending addon | - | - |
| Ci cd integration | - | - |
| Multi user inboxes | - | - |
| Open source | - | - |

*Source: Vioscale. Generated 2026-09-01T14:52:40.091Z. "-" = undocumented, not absent.*