SubEtha is a sophisticated mailing list manager, similar in many respects to the popular Mailman package but far more feature-rich. SubEtha offers easy installation on Windows and Unix platforms, a user-friendly Web interface, searchable, threaded archives, virtual domains, support for users with multiple email addresses, intelligent attachment handling, configurable message processing filters, per-list role-based permissions, and more.
Kerio MailServer is an email and collaboration suite that comes integrated with direct over-the-air (OTA) ActiveSync support, over 14 anti-spam layers (including SpamAssassin), dual anti-virus options (including a ClamAV plugin), collaboration features in Outlook, Entourage, Outlook Mobile, VersaMail, WebMail, and iCal, email archiving, and live automated backups. It supports a variety of SSL-encrypted communication protocols including POP3, IMAP, STMP, and HTTP for WebDAV, CalDAV, Web mail, and wireless ActiveSync. Wireless capabilities include direct email push, synchronization of calendar events, contacts, and tasks, and remote wipe for Windows Mobile devices to delete company data in the event the device is lost or stolen. Authentication options include Active Directory, Apple Open Directory, PAM, and an internal database. It can be administered remotely using an encrypted channel.
Shibboleth is a privacy and security-aware mailing list manager, perfect for allowing closed groups to interact on the Internet without interference from outsiders and former insiders. It features user verification to prevent any forged mailing to list, message digest handling, address standartization, header canonicalization, file serving, header-based passwords, PGP support, remote e-mail based management, lists moderation, message filters, and more.
ezmlm-web is a Web interface for the administration of ezmlm-idx mailing lists. It has user level access control, and allows you to create, modify, and update any mailing list's configuration as well as control the subscriber base. ezmlm-web provides full support for all the features of ezmlm-idx. The interface is template based and can easily be customized or replaced. It is translated into seven different languages. Support for encrypted mailing lists (gpg-ezmlm) is included.
newsPro is a Web interface for newsletters/announcements. Users can include their email address in the database, and they will receive email newsletters sent by this script. It is available in English, German, and Russian. In contrast to other similar scripts, no SQL is needed for newsPro.
Buni Meldware Communication Suite is an enterprise groupware product providing an email server, calendar server, and a Web mail client. The Web mail portion is written using Adobe's Flash and provides a rich cross-browser experience. Protocol support includes IMAP, POP, SMTP, iCAL, WCAP, and more. It uniquely supports full database email storage as well as file system storage of emails on major database platforms, and is easily installed via a Web Start graphical installation process.
The aim of the PicoForge project (previously known as PicoLibre) is to provide a set of high level libre software applications that are well integrated in order to provide a collaborative "forge". It makes it easy to deploy a collaborative work platform for developing software or hosting other collaborative activities. Having started (as PicoLibre) in an educational context, PicoForge is now a quite generic platform, comparable (but sometimes less advanced) to other *-Forge software platforms. It groups several high-level applications like phpGroupware, Sympa, TWiki, Subversion, and CVS.
maildir-bulletin takes a message on standard input, i.e. it runs in the same fashion as a mailing list program, and puts the message in every user's Maildir. The message is created once and links are created from all user's Maildir's to the original. This saves greatly on disk space usage and time. Delivering a 1K message to 100,000 users should only take a few hundred K of disk space and take ten or twenty minutes. If you have an alias to expand to 100,000 users the same 1K message will take 100M of storage and take several hours.