Open Source C++ Email Servers

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.

It is not only a web server, it is also Mail server, DNS server, FTP server, Proxy server, VPN server and client... All in one! This program will help you to open all the possibilities Internet can offer for your company - public site, provide Internet access and personal mailboxes for each employee! HTTP server. Server Side Includes. Regular expression in SSI. CGI interface for scripts (Executable files; Perl,PHP, or another external interpreters) ISAPI interface. Virtual hosts and directories Mail POP3 server. SMTP server. FTP server HTTP proxy server DNS server DHCP server HTTP TLS VPN server

YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!

xstress is a SMTP mail server stress testing tool. xstress creates multiple connections (using threads) to the (configured) mail server and sends mails with varying subject, body, attachment and TO/FROM addresses.

Another distribution of apache that contains Apache, MySQL, Perl, and PHP. and comes with the following modules mod_perl, mod_php, mod_python, and more. Also Contains a FTP and Mail Server. Will be ready to run right after installation and a reboot.

Emdras is a Mail Transport Agent / Mail server for any Win32 platform. It has a SMTP client, SMTP server, POP3 server and POP3 client.

Extensive High Availability Modules (XHAM) provides “active-active” failsafe solutions to your Linux Firewall, Gateway, Router, Email Server, NIDS (Snort), Proxy, Samba, MySQL (with NAS), and Apache.

Modular EMail Server with features to support SMTP-after-POP,Anti-Virus filter by using popular AV-Scanners,IMAP,POP3,SSL,ODMR,SASL and has an easy configuration. (SMTP,ODMR,IMAP,POP3,SASL,CHUNKING,BINARYMIME,PAM)

GNUsTicker is basically a RSS aggregator. It is a GNOME panel applet that scrolls infos retrieved from RSS, RDF, etc. It may be extended for feeding from different sources (an example for POP3 mail server is provided).

A Windows application to quickly send a document to a HP ePrint printer with a click of the mouse. After you've saved your information, just drag a file onto the window, and click Send to print the document.

ImportArgo is a utility to import configuration and settings from Argosoft Mail Server to the open-source hMailServer

A small linux distribution aimed at servers, where the single point of administration and authentication is an OpenLDAP database. It includes modified versions of the most important services: Web Server, Mail Server, File Server, DHCP Server, authenticat

MailRefinery is a tiny Linux distribution which will turn a machine into a complete mail server including Spam Assassin, GPL Virus filtering, POP, SPOP, IMAP, IMP, Fetchmail and a complete PHP based web interface to control it all.

Mailafar is a mail server designed for use in difficult communication environments providing a full set of Internet email protocols, web mail, web admin, dial-in and wireless LAN access control. It will run on Linux, FreeBSD and Windows.

OpenLemonade is a community project that implements a Lemonade service consisting of protocols and email server extensions that provide mobile email.

Program to benchmark high performance mail servers.

A small, fast, secure, anti-spam SMTP mail server (MTA). Delivery to mbox files and Maildirs supported. qwik-smtpd supports RBL, relay checking, raw/custom message handlers, and more. Custom authentication via checkpassword and a qmail-compatible configu

A SMTP and POP e-mail server for Windows and GNU/Linux.

SPAM Gatekeeper will be your weapon in the fight against SPAM. Use the Gatekeeper as a mail client or as a general filter between your mail client and the mail server and enjoy the easy-to-use user interface.

SPAM-Buster is a Java application for filtering SPAM based on statistical algorithms (currently Bayesian). The platform independant application can be used as graphical end-user client and additional service for mail server.

SPAMtasm is an SMTP open-relay honeypot. Its purpose is to trick spammers into thinking they have found yet another open relay mail server. In reality, SPAMtasm will simply respond as if everything is okay and discard all the e-mails.

Spey is the easy way to reduce the amount of spam you receive. It sits between your mail server and the outside world and performs greylisting and other verification checks. It needs very little configuration and no mail server setup and Just Works(TM).

Spicebird is an open-source email and collaboration suite based on the Mozilla platform. It provides integrated e-mail, contacts, calendaring and instant messaging. It can connect to any SMTP/IMAP email server, CalDav Calendar server and Jabber serve

SynchedIn is a portable utility created to enforce realtime or latent synchronization of data (generally files) between different data storage sources. You can create as many synch configs as you please. Each synch config specifies a number of data sources, a number of schedulers. Each scheduler determines when the data sources must be checked for synchronization. Each data storage source represents a hierarchical (file system ...) or other type of data storage medium. These include hard drive, removable media, sequential devices, online storage services. Perhaps the most distinguishing quality of this utility is POP3 and IMAP storage providers which enable storage of files in a mail server, such as gmail or yahoo, in so much the same way as an online storage service (google drive, drop box ...). Storage providers could be configured for encrypted storage and specification as to what part of the underlying medium the provider represents. Components: GUI+CLI+Daemon+ConfigStorage

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