---
title: "Mailu"
pageType: "tool-profile"
schemaVersion: "1.0"
snapshotId: "tv-20260911-8ab5e3f1311b"
generatedAt: "2026-09-11T07:01:56.000Z"
canonicalUrl: "https://toolvitals.com/tools/mailu/"
jsonUrl: "https://toolvitals.com/api/agent/tools/mailu"
indexable: true
---

# Mailu

Self-hosted mail server stack packaged as Docker images.

## Decision context

- Status: active
- ToolVitals score: 82/100
- Health score: 83/100
- Shipping score: 80/100
- Score mode: verdict
- Data confidence: 90/100
- Source coverage: 90/100
- Last evidence check: 2026-09-10

## Classification

- Use case: Self-Hosted Email Server (self-hosted-email-server)
- Category: Communication (communication)
- Tool mode: Source-visible project
- Openness: OSI-approved OSS
- License: MIT
- Tags: email, mail-server, self-hosted, docker, open-source, dkim, dmarc, docker-compose, fetchmail, imap, letsencrypt, mail, mailserver, pop3, smtp, webmail

## Public repository signals

- Repository: [Mailu/Mailu](https://github.com/Mailu/Mailu)
- Stars: 7504 (adoption context only)
- Forks: 998
- Open issues: 125
- Last commit date: 2026-08-22
- Releases in 90 days: 6

## Source receipts

- [Official website](https://mailu.io/) — checked 2026-09-10
- [Source repository](https://github.com/Mailu/Mailu) — checked 2026-09-10

## Discovery status

- Search indexable: yes
- Reason: sufficient tool evidence

## Interpretation limits

- ToolVitals scores summarize bounded public maintenance, shipping, openness, and evidence signals. They are not user-review ratings.
- GitHub stars and related popularity metrics are adoption context, not quality evidence.
- Missing values mean not collected or not confidently established; they do not mean zero.
- Public signals do not prove security, uptime, support quality, customer satisfaction, or production suitability.
- Verify material decisions against the linked first-party sources and your own requirements.