Open Source C++ Post-Office Software

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.

eMail traffic is on the rise. With over 100 man-years of development time behind it and a clean, intuitive interface that makes handling messages a breeze, Hermes Messenger (formerly known as QUALCOMM Eudora) is more than a way to send and receive mail: it's a powerful management tool with features to increase your productivity and enhance your communications. It is the best eMail program for people who get lots of it. If you're not yet one of them, you soon will be. Take control of your eMail before it takes control of you! Hermes provides industrial-strength communication, free of ads and free of cost.

hMailServer is a SMTP/POP3/IMAP server for Windows. Data is stored in MySQL/MSSQL database and is easily accessed using the COM library. Project info, trackers and downloads has moved to www.hmailserver.com.

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!

jwSMTP, Send email programmatically (C++ code/lib). Linux, BSD, Windows etc. Attachments, Multiple recipients, Cc/Bcc recipients supported. MX lookup or send to an SMTP server direct. LOGIN and PLAIN authentication now supported. Html or plain text forma

IntimaLite is a standalone client that filters pop3 email accounts. therefore, it detects spam-emails by matching recipient emailaddress with a blacklist of blocked emailaddresses. [GERMAN/ENGLISH]

New Maintainer wanted! I'm looking for a new maintainer for this project because I'm not able to attend it anymore. If you want to help please write to kuddel-fl. KShowmail is a POP3 mail checker for the KDE with these features: show number, size and more information about mails on pop3 servers in a list view, show the mail headers or complete mails, delete unwanted mail from server by configurable filters.

dBrowser is a PHP/MySQL/PostgreSQL framework/code generator aimed at web/database application developers.

Watch mailstores for changes and initiate mailbox syncs

A proxy server for gmail, that enables you to fetch your gmails using IMAP or POP3, and send mails by SMTP via your gmail account.

Qmail NMX is a project that intends to bring commercial features to Qmail, enabling it to manage high volume environments. Features such as scalability, high availability, high volume users, etc... are available to Qmail with this project.

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

An IMAP E-mail client for X-Windows written with GTK. Supports IMAP with and without SSL.

Amail is a mail deamon with web interface. Writen in PHP and C++.

This project aims to be a personal data storage and administration system. It will be an advanced system for information and electronic mail management. The server will be accessible to any IMAPv4 compatible mail client.

B-Client is a Windows DLL that provides internet communications protocols. This C++ DLL supports SMTP, POP, IMAP and NNTP protocols with support for other open internet communication protocols in the future.

Blue HttpMail is a library that connects to HTTPMail servers (such as hotmail.com) and a proxy that allows POP3, IMAP and SMTP access to those servers. Blue HttpMail is being developed using the open source library Blue http://bluelib.sourceforge.net

The goal is to develop a C++ class that impliments the IMAP4rev1 protocol as defined in RFC2060, including the TCP/IP routines.

BitMail is a Proof-of-Concept- / Design-Study for an Qt E-Mail Client. POP3 / IMAP / SMTP / P2P E-Mail-Client. ● Qt E-Mail Client. ● Build-in Encryption to secure E-Mails ● IMAP & POP3 ● Additionally a full decentral P2P Email-Option via the Echo Protocol ● Store Email for Offline-Friends in the P2P Network. ● Chat and Instant Messaging is build in. ● POPTASTIC function (Chat over Email) ● Calendar widget functionality. ● Open Source. BSD License. "Cassiopeia is the tortoise of Momo, which can communicate through writing on her shell and guides into the future." - Wikipedia. Source from: https://sf.net/projects/spot-on/files/ & https://github.com/textbrowser/spot-on

You've Got Mail: An application that sits down in system tray and checks mails as scheduled. It is *NOT* a mail-reader, only an agent that informs about the current status.

Set of pure useful Java utilities taking care of common tasks and avoiding re-write of code

A small ( ~60kb) gtk based application, designed to easily allow previewing and removal of a large number of emails from a POP3 account, without needing to download everything. This is especially useful for large amounts of SPAM, large attachments or co

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)

FiPPS is a simple POP3 proxy server for Windows which scans mail headers with regular expressions for spam/mailworms and deletes the mails without downloading them.

WinNT HTTPMail->POP3 service. HotPOP3 is a Windows NT service, written in C++, which acts as a proxy between an HTTPMail server (MSN Hotmail) and any POP3 email client.