Open Source Unix Shell Email Software

Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com

Liberté Linux is a secure, lightweight, and easy to use Gentoo-based Linux distribution intended as a communication aid in hostile environments. Liberté installs on a USB key, and boots on any computer or laptop.

Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support

Zimbra is an open source server and client technology for next-generation enterprise messaging and collaboration. Please see www.zimbra.com for the latest news and downloads.

Note: for binaries and installation instruction please visit official website. http://ictfax.org/ ICTFax is Open Source Fax Server software to send and receive Fax over Internet & Emails developed over Freeswitch, ICTCore and Angular Framework , It works with T.38 and G.711 pass through and feature email to fax, fax to email, web to fax, fax to web and also support fax machines to send and recieve Fax using ATA. Installation Guide https://www.ictfax.org/ictfax-installation-guide/ Administration Guide https://www.ictfax.org/ictfax-admin-guide/ User Guide https://www.ictfax.org/ictfax-user-guide/ Commercial Support If you do not posses Linux / VoIP expertise to install and setup ICTFax or you are busy, We can help you in installation, configuration and testing to make sure ICTFax setup is functional and tested. Below are Installation package link for custom projects and development work. Please Installation support services.

This is a Program code editor and code brower with built-in analysis for C/C++ programs.

FIDOGATE is a Fido-Internet gateway, a Fido FTN-FTN NetMail gateway, a Fido tosser, a Fido file processor/ticker, and a Fido Areafix/Filefix program (The latest code is in CVS but a GIT repository is being prepared.)

Faces - a Gtk+ program for monitoring a list (typically mail incoming messages) visually. It supports IMAP and POP mailboxes. There is a huge collection of picons (personal icons) that can be used in conjunction with the faces program.

Unix-Connect kann sehr vielseitig eingesetzt werden. Entwickelt wurde es um ein Unix-System als Server im Z-NETZ einsetzen zu können. Nebeneffekt ist die Gateway-Funktion. Gerade die Gateway-Routinen sind relativ gut portabel

AMaViS is a script that interfaces a mail transport agent (MTA) with virus scanners.

Synology Mail Station uses Roundcube for web based mail. Although Synology has a CardDAV Server now, the Roundcube they ship with Mail Station has no plugin for actually using it. This installable package for Synology DSM adds the CardDAV interface to Roundcube, allowing usage of the contacts from your CardDAV server. This package is based on the excellent "RoundCubeMail CardDAV" plugin of Benjamin "blind-coder" Schieder, as published on: https://github.com/blind-coder/rcmcarddav.

An advanced qmail distribution based on qmail-sql which has SMTP, SMTPS, POP3, POP3S, IMAP, IMAPS services, a content scanner, spoofing protections, SMTP AUTH support, SMTP-after-POP/IMAP, PHP5 API, SPF support and much more...

AVA SBS is a collaboration of Open-Source software designed to give small businesses a cost effective server solution with Enterprise capabilities. AVA-SBS gives business an easy to administrate Primary Domain Controller, Print Server, File Server, Email

Store your contacts and calendars on your own Synology NAS, away from the inquisitive eyes of Google, NSA and others. Baïkal itself is an already existing, lightweight CardDAV (contacts) and CalDAV (calendar) server. The source code is public, and available to everyone on GitHub. Baïkal is copyright (c) 2013 by Jérôme Schneider, the homepage is http://baikal-server.com. This SPK package for Synology integrates the Baïkal "flat package", making it easy to install Baïkal on your Synology NAS. The package and manual were made by Erik "Basalt". => PDF manual can be downloaded here in the [Files] section, highly recommended <= If you like Baïkal, please consider making a small donation to the developer Jerome Schneider. German Synology Forum (writing English is fine): http://www.synology-forum.de/showthread.html?49257-Baïkal-contacts-(CardDAV)-and-calendar-(CardDAV)-installation-package-for-Synology&p=392006&viewfull=1#post392006

This is a bash script that provides to a Linux DNS server Dynamic DNS capabilities using any pop3 client.

The EZ-qmail distribution is an EZ method for hobbyists / small businesses to try the qmail system for mail delivery. It provides an EZ to install, modern (patched) and working (integrated) qmail system onto which additional functionalities can be added

Start/Stop the mail processes as needed, allowing your Syno to hibernate (sleep) in the quiet hours. Only to be used with Mail Station polling external mail server(s), i.e. NOT when you run Mail Server with own domain (because the server should keep running all the time then). Still, you can use Mail Server just as IMAP server and SMTP relay. Mail Relaxer is not intended to be used with Zarafa. Credits for the original idea go to Tobi "jahlives" from German Synology forum.

Syron Qmail is a qmail distribution based on netqmail and qmail-sql which tries to unify several public available patches to include almost all modern mail server features into qmail (SQL User Database, SMTP AUTH/TLS, high load adjustments and more).

A small SMTP Server that is easy to use and allows for virus and SPAM checking.

A collection of Java programs using JavaMail API to help automating the process of sending mails.

Program to automate the backup of the MySQL database & file directory, and send the backup data files to an offsite destination for safe storage through email. Works with Joomla!, Mambo, PostNuke, WordPress & etc. See http://ecommerce.matrix-e.com NO

Email2Fax and Fax2Email gateway for Asterisk, that could be integrated to your own existing Asterisk.

This is a simple printer driver and backend for sending e-mail through the Common Unix Printing System (CUPS) software.

Copfilter is a easy to install addon for the opensource firewall IPCop. It filters POP3, SMTP, HTTP, and FTP traffic for viruses and spam using various open source programs.