Insight Server is a Linux-based email server utilizing open source components to provide a highly reliable, scalable, and cost effective email solution for customers of all sizes. It's designed to facilitate complete messaging and collaboration capabilities within a company. It supports all standard protocols, and provides backup and recovery tools, server redundancy, migration tools, and resource management.
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.
OpenEMM is a Web-based enterprise application for email marketing, marketing automation, email newsletter, and service email (like transaction email and event and time triggered email). It offers many features for professional users, among them: a great user interface, automatic bounce management, opening and link tracking, a lot of graphical real-time statistics, a content management system, a multi-queue mail backend for maximum sending performance, a plugin interface to easily extend the core functionality, and a scripting feature to enhance the functionality of OpenEMM with triggerable customized actions.
The deepOfix Mail Server makes it possible for organizations with minimal technical expertise to have robust server infrastructure. deepOfix offers unprecented ease of use, doesn't require prior GNU/Linux experience and is backed by a full-time development and support team. deepOfix features LDAP-based directory services for user account management, email delivery, distribution lists, and addressbooks. It also includes built in tools for spam and virus control, webmail, and fetching email.
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.
Tellmatic is a tool to manage and create newsletters for personalized mailing or mass mailing. Addresses and newsletters are stored in groups to handle different user groups and thousands of addresses at a time. SMTP is used for sending the newsletter to your subscribers to make sure you get all error and bounce messages. Bounces can be handled automagically via a small bounce-management module with POP3 access. It also has a small form-editor and statistics. You can import and export your addresses in CSV format.