Projects

Postfix

Postfix is Wietse Venema's mailer that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different.

mutt

Mutt is a small but very powerful text-based mail client for Unix operating systems. Though written from scratch, Mutt's initial interface was based largely on the ELM mail client. To a large extent, Mutt is still very ELM-like in presentation of information in menus (and in fact, ELM users ... [More] will find it quite painless to switch as the default key bindings are identical). As development progressed, features found in other popular clients such as PINE and MUSH have been added, the result being a hybrid, or "mutt." [Less]

Exim

Exim is a message transfer agent (MTA) developed for Unix systems connected to the Internet. It is similar to Smail 3, but expands on Smail features.

Sendmail

Sendmail is a remarkably flexible program, supporting many kinds of mail transfer and delivery including the overwhelmingly popular SMTP.

OBM

OBM is a groupware, email, LDAP, Windows PDC, CRM, and project management application. It is mainly used as an Exchange or Notes/Domino groupware and mail server replacement, as an LDAP directory, as a Windows PDC, as a contact and customer database, as a project management tool, or as any ... [More] combination of these functions. It provides groupware (calendars, contacts, and tasks) connectors for Outlook, Thunderbird/Lightning, and PDAs. It supports internationalization and themes. It is highly scalable, and is used by sites from five to many thousands of users. [Less]

qmail

qmail is a modern SMTP server which makes sendmail obsolete, written by Dan Bernstein. Qmail was released under the public domain in november 2007.

Courier Mail Server

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, and mailing list services within a single consistent framework. Individual components can be ... [More] enabled or disabled at will. Courier implements basic Web-based calendaring and scheduling services integrated in the Webmail module. [Less]

citadel

Citadel is a highly integrated Groupware Platform with a Web 2.0 enabled Web interface, but also providing SMTP, IMAP, POP3 and GroupDAV access to its content. Citadel offers versatile email services with very low administration needed. It provides its own implementations of these server ... [More] protocols: IMAP, POP3, SMTP, ManageSieve, XMPP, Citadel. [Less]

Apache JAMES Project

claimed by Apache Software Foundation

The Apache Java Enterprise Mail Server (a.k.a. Apache James) is a 100% pure Java SMTP and POP3 Mail server and NNTP News server. James is a complete and portable enterprise mail engine solution based on currently available open protocols. James is also a mail application platform. We have ... [More] developed a Java API to let you write Java code to process emails that we call the mailet API. A mailet can generate an automatic reply, update a database, prevent spam, build a message archive, or whatever you can imagine. A matcher determines whether your mailet should process an email in the server. The James project hosts the Mailet API, and James provides an implementation of this mail application platform API. [Less]

Postfix Admin

Postfix Admin is a web based interface used to manage mailboxes, virtual domains and aliases. It also features support for vacation/out-of-the-office messages.