Software Map

The DBMAIL package replaces the normal UNIX mailing system. All email and user data is stored in a database. You can create an unlimited number of email accounts, which can be checked using the POP3 or IMAP protocol. Users can maintain their own set of email addresses. It is more scalable, more secure, and faster than traditional mail systems. DBMAIL has storage drivers for PostgreSQL and MySQL, and it has authentication drivers for PostgreSQL, MySQL, and LDAP.

XMail is an Internet and intranet mail server featuring an ESMTP server, POP3 server, finger server, TLS support for SMTP and POP3 (both server and client side), multiple domains, no need for users to have a real system account, SMTP relay checking, DNS based maps check, custom (IP based and address based) spam protection, SMTP authentication (PLAIN LOGIN CRAM-MD5 POP3-before-SMTP and custom), a POP3 account synchronizer with external POP3 accounts, account aliases, domain aliases, custom mail processing, direct mail files delivery, custom mail filters, mailing lists, remote administration, custom mail exchangers, logging, and multi-platform code.

Domain Technologie Control (DTC) is a Web-based control panel for hosting that can delegate the task of creating subdomains, email, and FTP accounts to users for the domain names they own. It has support for many programs, including bind 8 and 9, MySQL, Apache, PHP 4, qmail, Postfix, Courier, Dovecot, ProFTPD, Webalizer, and mod-log-sql. It can also generate backup scripts, calculation scripts, and config files using a single system UID/GID, and monitor all traffic accounting per user and per service. It is fully skinnable and translated into several languages.

TWIG is a Web-based groupware suite written in
PHP, compatible with both PHP3 and PHP4. Its
features include IMAP and POP3 email, Usenet
newsgroups, contact management, scheduling, shared
notes and bookmarks, a todo list, and meeting
announcements. Any piece of information can be
shared with others via group oriented access
controls. By using only plain HTML, it is a
simple, cross-platform, fast, and
browser-independent way to access or share almost
any kind of information, without the complexity or
costs of other intranet/groupware packages. It is
fully internationalized, with 24 translations.

IndiMail is a messaging platform built using qmail and other messaging software. IndiMail has the ability to distribute the users in a domain across multiple hosts. IndiMail has multiple queues (called a queue collection), which can achiever very high concurrencies. The system IDs and configuration files used by IndiMail are all configurable through a set of environment variables, allowing you to customize IndiMail the way you want. IndiMail does not use hard-coded uid/gid in the executables, which makes it easy to distribute a binary package. IndiMail has features that any modern email server should have: SMTP, QMQP, QMTP, IMAP, POP3, DKIM, BATV, greylisting, filtering capability, and spam/virus control.

Perdition is a fully featured POP3 and IMAP4 proxy server. It is able to handle both SSL and non-SSL connections and redirect users to a real-server based on a database lookup. Perdition supports modular based database access. The distribution ships with modules for ODBC, MySQL, PostgreSQL, GDBM, POSIX Regular Expression, and NIS. The API for modules is open, allowing abitary modules to be written to allow access to any data store. Perdition can be used to create large mail systems where an end-user's mailbox may be stored on one of several hosts, to integrate different mail systems together, to migrate between different email infrastructures, and to bridge plain-text, SSL, and TLS services. It can also be used as part of a firewall.

The GNU POP3 daemon is a small, fast, and efficient POP3 server. It is written with performance and RFC compliance in mind, and supports virtual domains (i.e. several domain names on the same server).

popa3d is a POP3 daemon which attempts to be
extremely secure, reliable, RFC compliant, and
fast (in that order).

vpopmail (vchkpw) is a collection of programs and a library to
automate the creation and maintenance of virtual domain email
configurations for qmail installations using either a single UID/GID
or any valid UID/GID in /etc/passwd with a home directory. Features
are provided in the library for other applications which need to
maintain virtual domain email accounts. It supports named or IP-based
domains. It works with vqadmin, qmailadmin, vqregister, sqwebmail, and
courier-imap. It supports MySQL, Sybase, Oracle, LDAP, and file-based
(DJB constant database) authentication. It supports SMTP
authentication combined with the qmail-smtp-auth patch. It supports
user quotas and roaming users (SMTP relay after POP authentication).

OverLook is a Web mail client forked from the SquirrelMail project. It attempts to change the look and feel and make it simpler to use.