@Mail Groupware combines the ability to share address books, calendar items, and tasks among groups of users with optional permission levels. It provides a complete Web- based groupware system for users within your organization and provides an Outlook 2003/2000 to Web synchronization utility for Contacts and Calendar data.
AfterLogic WebMail Lite PHP is a Webmail script with a modern AJAX interface. It supports POP3/IMAP accounts, SMTP, and SSL (including Gmail). Users can check and send mail and use an address book. Skins, a 3-pane view, non-English languages (including right-to-left Arabic and Hebrew), UTF-8 and other charsets, IMAP folders, and view and compose HTML mail. MS SQL/MySQL backends are supported, as well as multiple mail accounts and domains, Web-based administration and installation, and cPanel integration.
Artica for Postfix is a secure Web interface for Postfix administration. It is designed to reduce the cost of creating and managing a full Linux mail server. It supports Postfix, Kaspersky Anti-spam, Kaspersky Anti-Virus, Bogofilter, Milter-greylist, SpamAssassin, Clam Antivirus, Amavis, OpenLDAP, SQLite library, Cyrus-imap, Procmail, Fetchmail, DnsMasq, Mailman, Sieve, Yorel script, QueueGraph, MailGraph, AWSTats, geoip, and more.
AtMail is a webmail client. The project aims to provide an elegant client for existing IMAP mailservers, with less bloat and a focus on an intuitive, simple user interface. Features include complete Webmail functionality, address-book support, video mail, an AJAX interface, drag'n'drop, and more.
Bulk Mac Mail is an an application for sending personalized mass email messages. It allows you to use message templates with multiple custom fields from the recipient database inside your messages. Customer lists can be imported from files of any type. Since all messages go through the standard Apple Mail's message delivery framework, they are absolutely indistinguishable from the messages that were actually sent by Apple Mail.