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VENTUREGAPS

TOOLS THAT INTEGRATE WITH POSTFIX

14 tools found|Updated MARCH 2026
H

Haraka

OPEN SRC

Fast, highly extensible, and event driven SMTP server

APPROVED
M

Mailman

OPEN SRC

Manage electronic mail discussion and e-newsletter lists

APPROVED
S

Sympa

OPEN SRC

Sympa manages email lists for communities and organizations

APPROVED
B

b1gMail

OPEN SRC

Complete email solution that runs on any webspace with PHP and MariaDB. It supports POP3 catchall mailboxes and can also integrate with Postfix or b1gMailServer if you're running your own server

APPROVED
M

Maddy Mail Server

OPEN SRC

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon

APPROVED
M

Mailcow

OPEN SRC

Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration

APPROVED
M

Mailu

OPEN SRC

Simple yet full-featured mail server as a set of Docker images

APPROVED
M

Modoboa

OPEN SRC

Mail hosting and management platform including a modern and simplified web user interface

APPROVED
W

wildduck

OPEN SRC

Scalable open-source mail server with no single point of failure

APPROVED
C

Cyrus IMAP

OPEN SRC

The complete, scalable, and open-source email, contacts, and calendar server.

APPROVED
C

chasquid

OPEN SRC

SMTP (email) server with a focus on simplicity, security, and ease of operation

APPROVED
D

docker-mailserver

OPEN SRC

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database

APPROVED
M

Mail-in-a-Box

OPEN SRC

Turns any Ubuntu server into a fully functional mail server with one command

APPROVED
D

DoubleZero

FREEMIUM

Self-hosted email infrastructure, built for developers.

APPROVED

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WHY POSTFIX INTEGRATION MATTERS

Tools that integrate with Postfix let you connect your existing workflow without switching contexts. Whether you use Postfix for communication, development, or automation, these tools plug directly into your stack — saving time and reducing friction.