Citadel alternatives and similar software solutions

Based on the "Complete solutions" category.

Mail-in-a-Box

9.2 8.0 L3 Citadel VS Mail-in-a-Box

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.
docker-mailserver

9.0 8.7 Citadel VS docker-mailserver

DISCONTINUED. A fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker. [Moved to: https://github.com/docker-mailserver/docker-mailserver]

Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.

Promo influxdata.com

Mailcow

8.8 9.5 Citadel VS Mailcow

mailcow: dockerized - 🐮 + 🐋 = 💕
Mailu

8.2 8.9 Citadel VS Mailu

Insular email distribution - mail server as Docker images
mail-server

8.1 9.6 Citadel VS mail-server

Secure & Modern All-in-One Mail Server (IMAP, JMAP, POP3, SMTP)
Modoboa

7.1 9.6 L5 Citadel VS Modoboa

Mail hosting made simple
wildduck

6.4 8.6 Citadel VS wildduck

Opinionated email server
DebOps

5.9 9.6 Citadel VS DebOps

DebOps - Your Debian-based data center in a box
homebox

4.0 9.4 Citadel VS homebox

A set of ansible scripts to build a personal mail server / private cloud / etc.
Ptorx

3.4 0.0 Citadel VS Ptorx

DISCONTINUED. 📩🛡 Email privacy. Anonymously send and receive with alias forwarding. (Abandoned)
Inboxen

3.0 0.0 Citadel VS Inboxen

DISCONTINUED. Main repo for Inboxen.org
AnsiMail

2.5 0.0 Citadel VS AnsiMail

Fullstack, security focused, personal mail server based on OpenSMTPD for OpenBSD
iRedMail

1.1 - Citadel VS iRedMail

Full-featured mail server solution based on Postfix and Dovecot.
Simple NixOS Mailserver

- Citadel VS Simple NixOS Mailserver

A complete mailserver solution leveraging the Nix Ecosystem.
Qmailtoaster

- Citadel VS Qmailtoaster

Stable, full-featured, easy-to-install mail server based on qmail.