Google Workspace

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

SMTP and IMAP with spam and virus filtering, configured from files, without webmail.

Sprache

Shell

Lizenz

MIT

Sterne

19k

Neuestes Release

v16.0.1

Letzter Push

2026-10-04

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

Mail, contacts and calendars for your own domains on one Ubuntu server, without the office apps.

Sprache

Python

Lizenz

CC0-1.0

Sterne

15k

Neuestes Release

v77

Letzter Push

2026-09-26

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

Mail over JMAP, IMAP and SMTP, plus CalDAV and CardDAV, in one Rust server.

Sprache

Rust

Lizenz

Keine erkannt

Sterne

15k

Neuestes Release

v0.16.25

Letzter Push

2026-10-05

Keine Lizenz erkannt

mailcow: dockerized - 🐮 + 🐋 = 💕

Mail, calendars and contacts with SOGo webmail; no office suite.

Sprache

JavaScript

Lizenz

GPL-3.0

Sterne

14k

Neuestes Release

2026-09a

Letzter Push

2026-10-06

Insular email distribution - mail server as Docker images

Mail with webmail, spam filtering and an admin UI.

Sprache

Python

Lizenz

Other

Sterne

7.5k

Neuestes Release

2024.06.61

Letzter Push

2026-10-06

The Roundcube Webmail suite

Webmail with an address book and plugins, on top of an IMAP and SMTP server you run.

Sprache

PHP

Lizenz

GPL-3.0

Sterne

7.2k

Neuestes Release

1.7.4

Letzter Push

2026-10-02

✉️ Composable all-in-one mail server.

SMTP, IMAP, DKIM, SPF and DMARC in one Go binary; mail only.

Sprache

Go

Lizenz

GPL-3.0

Sterne

6.1k

Neuestes Release

v0.9.6

Letzter Push

2026-10-03

modern full-featured open source secure mail server for low-maintenance self-hosted email

SMTP, IMAP, webmail, spam filtering and automatic TLS in one Go binary; mail only.

Sprache

Go

Lizenz

MIT

Sterne

5.9k

Neuestes Release

v0.0.17

Letzter Push

2026-09-13

Mail hosting made simple

A web admin and webmail that sets up Postfix and Dovecot for mail, calendars and contacts.

Sprache

Python

Lizenz

ISC

Sterne

3.5k

Neuestes Release

2.11.0

Letzter Push

2026-10-06

Full-featured, open source mail server solution for mainstream Linux/BSD distributions.

A shell script that installs and configures Postfix, Dovecot, webmail and spam filtering on one server.

Sprache

Shell

Lizenz

GPL-3.0

Sterne

1.8k

Neuestes Release

1.8.8

Letzter Push

2026-09-23