# foxcpp/maddy

✉️ Composable all-in-one mail server.

Repository: https://github.com/foxcpp/maddy
Canonical: https://ross.abutalabs.com/products/maddy
Homepage: https://maddy.email
Language: Go
License: GPL-3.0
License Family: copyleft
Topics: imap, smtp, mail, dkim, dmarc, spf, email
Last push: 2026-07-24T20:55:23+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 85, longevity 100
- inputs: {"age_days": 3586, "days_push": 40, "days_rel": 102, "gap_med": 17.0, "n_releases_24m": 9}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6077, forks 326 (observed 2026-08-28T04:09:34.840569+00:00)

## What it is
Maddy is a composable all-in-one mail server written in Go that combines an SMTP MTA/MX, IMAP storage, and email security protocols (DKIM, SPF, DMARC, DANE, MTA-STS) in a single daemon. It replaces the traditional Postfix + Dovecot + OpenDKIM stack with one lightweight, uniformly configured binary.

## Use cases
- self-host a personal email server on a VPS
- run an SMTP server to send and receive mail
- host an IMAP mailbox server
- sign outgoing mail with DKIM and enforce SPF/DMARC
- replace Postfix and Dovecot with a single lightweight daemon
- set up a small mail server without Docker

## When to choose
- you want a minimal, single-binary mail server for a small personal or low-volume domain
- you prefer uniform configuration over stitching together Postfix, Dovecot, and OpenDKIM
- you want a memory-safe Go implementation that doesn't need root
- you have limited resources (about 1 GiB RAM is enough)

## When to avoid
- you need a mature, feature-packed IMAP server - Dovecot is more battle-tested
- you want a web admin interface or a full groupware bundle like MailCow or Mail-in-a-Box
- you run a large, high-volume mail operation needing 20-year-old proven software
- your provider blocks outbound port 25 and you can't use a smart host

## Facets
- artifact type: application
- maturity: active
- function: email, http-server, security, monitoring, self-hosted
- domain: email, self-hosted, networking, security, backend
- platform: go, self-hosted, cross-platform
- tags: mail-server, smtp, imap, dkim, spf, dmarc, mta, mx, single-binary, email-security, linux, docker

## Member repositories
- foxcpp/maddy (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:34.840569+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:48:20.845309+00:00, confidence not recorded.
  - readme: https://github.com/foxcpp/maddy (fetched 2026-08-28T04:09:34.840569+00:00, sha 6b7ef110736b)
  - homepage: https://maddy.email (fetched 2026-08-29T08:45:01.129400+00:00, sha 259da06b7a94)
  - site_page: https://maddy.email/faq (fetched 2026-08-29T08:45:01.138590+00:00, sha f0e2dfb97200)
  - site_page: https://maddy.email/tutorials/setting-up (fetched 2026-08-29T08:45:01.140657+00:00, sha 0b6025d1d75c)
- Data as of 2026-08-30T08:39:29.467469+00:00.