# MailHog vs Testmail.app

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

| Attribute | MailHog | Testmail.app |
|---|---|---|
| **Vioscale score** | 42.8 (19% (low)) | 82.2 (42% (low)) |
| activity.commits_last_30d | 0 | - |
| adoption.dependent_repos | 11 | - |
| adoption.github_stars | 16,138 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | MailHog intercepts and stores SMTP messages during development, providing a web UI and JSON API for viewing and managing test emails, with the option to forward messages to real mail servers. | 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. |
| features.capabilities | `{"open_source":true,"sms_testing":false,"api_assertions":true,"spam_score_check":false,"ci_cd_integration":false,"rendering_preview":true,"multi_user_inboxes":true,"production_sending_addon":true,"blocklist_deliverability_check":false}` | - |
| integrations.count | - | 3 |
| integrations.list | - | `[{"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 | `{"mac":true,"web":true,"linux":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 | commercial | 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/mailhog/MailHog/releases/tag/v1.0.1","date":"2020-08-11T18:04:41Z","type":"stable","version":"v1.0.1"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v1.0.0","date":"2017-04-16T23:36:18Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.2.1","date":"2016-09-04T18:31:48Z","type":"stable","version":"v0.2.1"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.2.0","date":"2016-03-20T17:23:21Z","type":"stable","version":"v0.2.0"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.9","date":"2016-03-13T19:24:01Z","type":"stable","version":"v0.1.9"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.8","date":"2015-10-06T20:29:59Z","type":"stable","version":"v0.1.8"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.7","date":"2015-05-20T20:03:57Z","type":"stable","version":"v0.1.7"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.6","date":"2015-03-14T10:01:38Z","type":"stable","version":"v0.1.6"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.5","date":"2015-02-12T21:30:55Z","type":"stable","version":"v0.1.5"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.4","date":"2015-02-12T20:57:47Z","type":"stable","version":"v0.1.4"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.3","date":"2015-01-08T22:36:13Z","type":"stable","version":"v0.1.3"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.2","date":"2015-01-08T21:17:03Z","type":"stable","version":"v0.1.2"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.1","date":"2015-01-04T12:54:33Z","type":"stable","version":"v0.1.1"},{"url":"https://github.com/mailhog/MailHog/releases/tag/v0.1.0","date":"2014-12-27T13:50:55Z","type":"stable","version":"v0.1.0"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.09","date":"2014-12-24T13:40:49Z","type":"prerelease","version":"0.09"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.08","date":"2014-12-21T09:34:14Z","type":"prerelease","version":"0.08"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.07","date":"2014-11-18T08:10:22Z","type":"prerelease","version":"0.07"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.06","date":"2014-11-13T18:23:01Z","type":"prerelease","version":"0.06"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.05","date":"2014-11-01T22:51:22Z","type":"prerelease","version":"0.05"},{"url":"https://github.com/mailhog/MailHog/releases/tag/0.04","date":"2014-10-29T18:53:09Z","type":"prerelease","version":"0.04"}]` | - |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 2.6 | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fmailhog%2FMailHog&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Email Testing Dev)

| Capability | MailHog | 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 2026-09-01T14:56:06.997Z. "-" = undocumented, not absent.*