Running in production · Independent · 22 Oct 2026

foxcpp/maddy

✉️ Composable all-in-one mail server.

← Running in production
Maddy: all-in-one mail server. Combines sending, receiving, and storage in one daemon.

In simple English

Running your own email server usually requires piecing together many separate programs. Setting them up takes days and fixing errors is hard. Maddy packs all the necessary parts into a single program. You get sending, receiving, and storage in one place. It also handles modern security checks like DKIM and SPF automatically.

What it is

Maddy is a mail server written in Go that combines SMTP, IMAP, and security checks into a single daemon. It replaces traditional tools like Postfix and Dovecot with a uniform configuration file.

What it is good for

Solo builders who want to run their own email server on a cheap virtual private server without managing five different configuration files.

Stars6.1k
LicenceGPL-3.0
Latestv0.9.6 (2026-10-03)checked 22 Oct 2026
Last code change2026-10-20
Written inGo
Setup effort
4 / 5
Payoff
4 / 5
Good
  • Replaces multiple separate mail programs with one single executable file.
  • Includes built-in security features like DKIM, SPF, and DMARC out of the box.
  • Uses a single, easy-to-read configuration file for all settings.
Watch for
  • Email server administration requires ongoing security monitoring and DNS management.
  • The built-in IMAP storage feature is currently in beta status.
  • Requires command-line server administration skills to set up and run.
Replaces

Postfix, Dovecot, OpenDKIM, and OpenSPF

Works well with

A virtual private server and a custom domain name

Similar repositories
Also reviewed on Repo Radar
  • slok/sloth2.6k stars

    Generates Prometheus alerting and recording rules from a short specification of a service level objective.

  • nicolargo/glances34k stars

    A live view of one computer's health, in a terminal, in a browser, or through an AI assistant.

  • dokku/dokku32k stars

    A small platform you install on one server, which builds and runs an app every time you push code to it.

Install
go install github.com/foxcpp/maddy/cmd/maddy@latest

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: Infrastructure & Security › Hosting & Deployment › Email Servers.

Get the next edition in your inbox

A dozen repositories, opened and checked. The licence read, the last release dated, and the ones that did not make it named with the reason. It is the half most lists leave out.

No tracking pixels. One click to leave. The archive stays free either way.

We use your address to send the edition and nothing else. Confirm by email, leave in one click. How we handle it.