# Maildev vs Mailpit

| Attribute | Maildev | Mailpit |
|---|---|---|
| **Vioscale score** | 63.8 (24% (low)) | 39.6 (23% (low)) |
| activity.commits_last_30d | 24 | 36 |
| adoption.dependent_repos | 313 | 0 |
| adoption.github_stars | 6,032 | 10,208 |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Runs as a local SMTP server with a web inbox interface to capture and review emails generated by your application during development. Supports AI agent integration through the Model Context Protocol for automated email inspection. | 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. |
| integrations.count | - | 1 |
| integrations.list | - | `[{"name":"SpamAssassin"}]` |
| language.primary | TypeScript | Go |
| license.spdx | MIT | MIT |
| platform.support | `{"cli":true,"web":true}` | `{"web":true}` |
| pricing | `{"type":"free","summary":"Free & open source (MIT)","freeTier":true,"sourceUrl":"https://maildev.github.io/maildev/","retrievedAt":"2026-08-20T16:30:07.523Z"}` | - |
| pricing.free_tier | yes | - |
| pricing.model | commercial | - |
| pricing.price_level | free | - |
| pricing.transparent | yes | - |
| release.cadence_days | 46 | 11 |
| release.history | `[{"url":"https://github.com/maildev/maildev/releases/tag/maildev%403.0.0-rc.1","date":"2026-07-06T19:40:50Z","type":"stable","version":"maildev@3.0.0-rc.1"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.2.1","date":"2024-12-12T02:09:20Z","type":"stable","version":"v2.2.1"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.1.0","date":"2023-07-20T01:57:33Z","type":"stable","version":"v2.1.0"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.0.5","date":"2022-05-18T16:10:38Z","type":"stable","version":"v2.0.5"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.0.4","date":"2022-05-17T21:24:00Z","type":"stable","version":"v2.0.4"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.0.2","date":"2022-03-23T07:56:47Z","type":"stable","version":"v2.0.2"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.0.1","date":"2022-03-23T03:43:18Z","type":"stable","version":"v2.0.1"},{"url":"https://github.com/maildev/maildev/releases/tag/v2.0.0","date":"2022-03-22T16:22:09Z","type":"stable","version":"v2.0.0"},{"url":"https://github.com/maildev/maildev/releases/tag/v1.1.1","date":"2022-03-22T16:08:54Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/maildev/maildev/releases/tag/v1.1.0","date":"2019-07-27T21:57:24Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/maildev/maildev/releases/tag/1.0.0","date":"2019-03-19T02:36:24Z","type":"stable","version":"1.0.0"},{"url":"https://github.com/maildev/maildev/releases/tag/0.14.0","date":"2016-08-13T16:24:32Z","type":"stable","version":"0.14.0"},{"url":"https://github.com/maildev/maildev/releases/tag/0.13.4","date":"2016-07-01T22:58:28Z","type":"stable","version":"0.13.4"},{"url":"https://github.com/maildev/maildev/releases/tag/0.13.3","date":"2016-05-16T04:11:12Z","type":"stable","version":"0.13.3"},{"url":"https://github.com/maildev/maildev/releases/tag/0.13.2","date":"2016-05-14T18:25:02Z","type":"stable","version":"0.13.2"},{"url":"https://github.com/maildev/maildev/releases/tag/0.13.1","date":"2016-04-22T03:17:26Z","type":"stable","version":"0.13.1"},{"url":"https://github.com/maildev/maildev/releases/tag/0.13.0","date":"2016-03-20T20:45:31Z","type":"stable","version":"0.13.0"},{"url":"https://github.com/maildev/maildev/releases/tag/0.12.2","date":"2016-03-08T03:05:13Z","type":"stable","version":"0.12.2"},{"url":"https://github.com/maildev/maildev/releases/tag/0.12.1","date":"2015-11-07T23:18:35Z","type":"stable","version":"0.12.1"},{"url":"https://github.com/maildev/maildev/releases/tag/0.12.0","date":"2015-08-26T04:51:51Z","type":"stable","version":"0.12.0"}]` | `[{"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"}]` |
| security.scorecard | 4.6 | - |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=maildev&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` | `{"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 | Maildev | Mailpit |
|---|:--:|:--:|
| **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 2026-09-01T14:40:00.971Z. "-" = undocumented, not absent.*