# Mailpit

- **Canonical URI:** https://www.vioscale.ai/software/mailpit
- **Category:** Email Testing Dev
- **Homepage:** https://mailpit.axllent.org
- **Also known as:** mailpit
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-26T19:18:17.070Z

## Vioscale score

**39.6 / 100**, confidence 23% (low). Computed 2026-09-01.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 0 | 0.07844444444444446 | 0 | - |
| repo_stars | 75.6 | 0.026 | 2 | ✓ |
| integrations | 8.7 | 0.07033333333333334 | 0.6 | ✓ |
| dependent_projects | 0 | 0.063 | 0 | ✓ |
| dev_activity | 49.4 | 0.094 | 4.6 | ✓ |
| release_cadence | 93.9 | 0.052 | 4.9 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| package_downloads | 0 | 0.136 | 0 | - |
| security_score | 0 | 0.042 | 0 | - |
| community_qa_activity | 0 | 0.063 | 0 | - |

## About

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.

_Independently observed._

## Platform & deployment

- **Platforms:** Web
- **Deployment:** Self-hosted

## Integrations (1)

_Independently observed._

- SpamAssassin

## Release history

| Version | Date | Type |
|---|---|---|
| [v1.31.0](https://github.com/axllent/mailpit/releases/tag/v1.31.0) | 2026-08-22 | stable |
| [v1.30.7](https://github.com/axllent/mailpit/releases/tag/v1.30.7) | 2026-08-08 | stable |
| [v1.30.6](https://github.com/axllent/mailpit/releases/tag/v1.30.6) | 2026-07-28 | stable |
| [v1.30.5](https://github.com/axllent/mailpit/releases/tag/v1.30.5) | 2026-07-20 | stable |
| [v1.30.4](https://github.com/axllent/mailpit/releases/tag/v1.30.4) | 2026-07-09 | stable |
| [v1.30.3](https://github.com/axllent/mailpit/releases/tag/v1.30.3) | 2026-06-27 | stable |
| [v1.30.2](https://github.com/axllent/mailpit/releases/tag/v1.30.2) | 2026-06-17 | stable |
| [v1.30.1](https://github.com/axllent/mailpit/releases/tag/v1.30.1) | 2026-05-28 | stable |
| [v1.30.0](https://github.com/axllent/mailpit/releases/tag/v1.30.0) | 2026-05-14 | stable |
| [v1.29.7](https://github.com/axllent/mailpit/releases/tag/v1.29.7) | 2026-04-16 | stable |
| [v1.29.6](https://github.com/axllent/mailpit/releases/tag/v1.29.6) | 2026-04-05 | stable |
| [v1.29.5](https://github.com/axllent/mailpit/releases/tag/v1.29.5) | 2026-03-29 | stable |
| [v1.29.4](https://github.com/axllent/mailpit/releases/tag/v1.29.4) | 2026-03-22 | stable |
| [v1.29.3](https://github.com/axllent/mailpit/releases/tag/v1.29.3) | 2026-03-10 | stable |
| [v1.29.2](https://github.com/axllent/mailpit/releases/tag/v1.29.2) | 2026-02-24 | stable |

_… and 5 earlier release(s)._

## Security & compliance


Known vulnerabilities: 13 (13 in the last 12 months), max severity HIGH ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Faxllent%2Fmailpit&per_page=100)). A count reflects scale and disclosure, not quality.

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 36 | [link](https://github.com/axllent/mailpit/pulse) | 2026-08-26 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 10,208 | [link](https://github.com/axllent/mailpit) | 2026-08-26 | 90% (high) |
| adoption.dependent_repos | 0 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Faxllent%2Fmailpit) | 2026-08-26 | 85% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Go | [link](https://github.com/axllent/mailpit) | 2026-08-26 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/axllent/mailpit) | 2026-08-26 | 95% (high) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 11 | [link](https://github.com/axllent/mailpit/releases) | 2026-08-26 | 70% (medium) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 1 | [link](https://mailpit.axllent.org) | 2026-08-20 | 60% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| 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"}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Faxllent%2Fmailpit&per_page=100) | 2026-08-26 | 90% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/mailpit). Independent, evidence-based software intelligence. Cite the canonical URI.*