Open Source Linux 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.

Send SMTP email silently from command line (CLI), or a batch file using Exchange, Gmail, Hotmail, or Yahoo! Plus. Supports XML settings files, variables, or all settings explicitly from the command line. Now supporting Exit Codes for batch file use (will return "0" for successful delivery, or "1" for error delivering) - handle your batch file accordingly.

Fetchmail is a mail retrieval daemon that can download messages from POP3, IMAP, ODMR and ETRN-based stores, with SSL/TLS security including certificate verification, and pass downloaded mail to a local SMTP or LMTP server, or a message delivery agent such as maildrop.

A command line utility for synchronizing remote IMAP mailboxes and local maildir-style mailboxes. This is useful for working in disconnected (off-line) mode, such as on a laptop, but also for mirroring mailboxes between servers.

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

.NET library written in C# with a full implementation of a POP3 client. Easy to use but yet powerful. Includes a robust MIME parser backed by several hundred test cases. The easiest way to install OpenPop.NET is via NuGet. In Visual Studio's Package Manager Console, simply enter the following command: Install-Package OpenPop.NET Our homepage (http://hpop.sourceforge.net/) includes examples, documentation and a general introduction for email. For more information, visit our project homepage. Code is hosted on GitHub (https://github.com/foens/hpop).

Convert Webmail to POP3.Is also included a SMTP/POP3 tunneling system that allow send and receive email in a private network HTTP PROXY based. All connection are plugin based. Over 450 email server supported and tested, GMAIL POP3/SMTP over Proxy Network.

ZMail allows you to send email from anyone, to anyone. You can use ZMail to send fake or anonymous emails. Have fun!

Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.

Provide an Open Source Java Email Server that supports POP3/SMTP.

FreePOPs is a webmail to pop3 conversion daemon. It is extensible to support other webmail using the scripting language LUA. See the homepage for supported webmails.

Heirloom mailx (formerly known as "nail") is intended provide the functionality of the POSIX mailx command with additional support for MIME messages, IMAP (including caching), POP3, SMTP, S/MIME, message threading/sorting, scoring, and filtering.

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

JEEPERS (Jason's Extra Easy to Program Email Response System) uses a POP3 email account to monitor email for command phrases in subject lines. Default commands for remote file storeage and retrival. (Nothing to do with mailing lists or mass emailing.)

Watch mailstores for changes and initiate mailbox syncs

AtMail is an open source webmail client written in PHP. We aim to provide a elegant Ajax webmail client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface.

GreenMail is an intuitive and easy-to-use test suite of email servers for testing purposes. Supports SMTP, POP3, IMAP with SSL socket support, and configurable user accounts and credentials. All in 100% Java. WE'VE MOVED TO GIT HUB: https://github.com/greenmail-mail-test/greenmail

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.

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

Pulsar POP3 server (daemon) is easy to use with intuitive configuration file. It supports virtual (non-system) users and virtual hosts (IP based and user supplied). Can run from xinetd, inetd or standalone.

This is a set of .NET class libraries, designed to use various Internet protocols in a easy-to-use OO matter. So far it contains a POP3 and an IRC (Internet Relay Chat) library.

CleanPOP de-spams and expires emails from a POP3 server based on matching emails in your local mbox file, so local anti-spam tools can be used to clean your remote inbox. It is also useful for fetchmail users, who have no option to *delete after X days*

Nascarconfd is a highly customizable deamon to manage a clustered mailserver environment using postfix and dovecot.

Browsing your mail on mail server, And deleting mails without downloading.

Check given IP/Host presence in 106 RBLs. Now, you don\'t have to check a lot www sites, just run this script in console.