# GreenMail vs Testmail.app

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

| Attribute | GreenMail | Testmail.app |
|---|---|---|
| **Vioscale score** | 58.2 (31% (low)) | 82.2 (42% (low)) |
| activity.commits_last_30d | 28 | - |
| adoption.dependent_repos | 2,587 | - |
| adoption.github_stars | 740 | - |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | A testing framework that emulates email server behavior (SMTP, POP3, IMAP) to help developers verify email functionality in their applications during testing, without requiring actual email infrastructure or sending real messages. | 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":true,"rendering_preview":false,"multi_user_inboxes":true,"production_sending_addon":false,"blocklist_deliverability_check":false}` | - |
| integrations.count | - | 3 |
| integrations.list | - | `[{"name":"Microsoft Entra ID"},{"name":"Okta"},{"name":"OneLogin"}]` |
| language.primary | Java | - |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"hqCountry":"CA","primaryMarkets":["US","CA"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://greenmail-mail-test.github.io/greenmail/","retrievedAt":"2026-08-21T12:46:10.376Z"}` | `{"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 | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | free | low |
| pricing.starting_price | - | `{"amount":12,"currency":"USD"}` |
| pricing.transparent | - | yes |
| release.cadence_days | 43 | - |
| release.history | `[{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.13","date":"2026-08-23T10:02:24Z","type":"stable","version":"release-2.1.13"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.12","date":"2026-08-05T18:50:04Z","type":"stable","version":"release-2.1.12"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.11","date":"2026-07-15T19:46:18Z","type":"stable","version":"release-2.1.11"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.10","date":"2026-07-14T09:57:41Z","type":"stable","version":"release-2.1.10"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.9","date":"2026-06-14T17:01:37Z","type":"stable","version":"release-2.1.9"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.8","date":"2025-12-14T17:26:41Z","type":"stable","version":"release-2.1.8"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.7","date":"2025-10-07T21:21:09Z","type":"stable","version":"release-2.1.7"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.6","date":"2025-09-28T18:47:25Z","type":"stable","version":"release-2.1.6"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.5","date":"2025-08-10T18:41:13Z","type":"stable","version":"release-2.1.5"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.4","date":"2025-07-13T16:54:29Z","type":"stable","version":"release-2.1.4"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.3","date":"2025-02-04T20:59:33Z","type":"stable","version":"release-2.1.3"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.2","date":"2024-11-30T11:21:39Z","type":"stable","version":"release-2.1.2"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.1","date":"2024-11-17T21:12:57Z","type":"stable","version":"release-2.1.1"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.0","date":"2024-10-05T16:20:21Z","type":"stable","version":"release-2.1.0"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.0-rc-1","date":"2024-05-31T20:05:52Z","type":"stable","version":"release-2.1.0-rc-1"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.0-alpha-4","date":"2024-01-28T18:47:27Z","type":"stable","version":"release-2.1.0-alpha-4"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-1.6.15","date":"2023-12-03T15:51:55Z","type":"stable","version":"release-1.6.15"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.0.1","date":"2023-11-17T21:42:15Z","type":"stable","version":"release-2.0.1"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.0-alpha-3","date":"2023-11-04T13:17:06Z","type":"stable","version":"release-2.1.0-alpha-3"},{"url":"https://github.com/greenmail-mail-test/greenmail/releases/tag/release-2.1.0-alpha-2","date":"2023-08-20T20:17:02Z","type":"stable","version":"release-2.1.0-alpha-2"}]` | - |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 6.4 | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.icegreen%3Agreenmail&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Email Testing Dev)

| Capability | GreenMail | 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 2026-09-01T17:06:15.195Z. "-" = undocumented, not absent.*