Atmail is a fully-featured email server and Webmail client, allowing users to send and receive email via a Web browser or mobile device. It has full support for IMAP mailboxes, and an optional email-server mode that uses EXIM as the MTA. Features include a scheduler, MySQL backend support, spell-check, address book, calendar user preferences, multiple accounts, SpamAssassin support, migration scripts from other mail servers, a customizable interface, an attractive AJAX interface, an optional group sharing Calendar/Addressbook, and an Outlook plugin to sync Contacts/Tasks/Calendar data between a Desktop, Mobile, and Webmail client or other email users.
Cerb is a fast and flexible Web-based platform for business collaboration and automation. It helps you remember anything about anyone, collaborate from anywhere, deftly reply to a flood of email, automate, stay informed, capture feedback, track time, flag opportunities, manage tasks, share expert knowledge, and otherwise execute efficiently.
testmail is a Perl script that checks email availability at the POP3 server (including SSL), filters it according to the defined rules, and (depending on the selected method) gets the messages to the local mailbox and/or removes them from the server. It uses Perl Mail-POP3Client to establish POP3 connections, IO-Socket-SSL and Net-SSLeay modules for SSL connections, as well as MIME-tools module for decoding MIME encoded email fields.
phlyMail is a groupware, webmailer, and PIM. It offers unlimited nested groups, unlimited POP3/IMAP profiles, quotas, an integrated address book, a calendar with multiple reminders and event repetitions, a file manager with an integrated WebDAV server, the ability to send faxes, SMS support (which lets you send SMS, get reminded of events via SMS, and get email notification via SMS), a bookmark manager, themes, and multilingual support. It uses either sendmail or SMTP to send email, and can handle MIME and SSL connections. Support for IDN (Internationalized Domain Names) is included. Through its modular design, it's easy to add completely new features as modules, which can be plugged into the system.
Hastymail is a full featured IMAP/SMTP client written in PHP. The goal is a full featured yet lightweight Web mail client. After a complete review and rewrite, it provides many improvements over the original code including optional AJAX functionality, improved code organization, a plugin API, CSS and PHP template themes, and much more.
SMC anti-spam email filter is a software application (plug-in) designed to significantly reduce the amount of spam/UCE (junk-mail) you receive. SMC uses a greylisting-like technique to stop the junk-mail and a set of dynamic, automatic "whitelists" for unknown, but legitimate senders.
Mailbox Sweeper lets you delete email messages in your mailbox without downloading them. You can log into your mailbox, preview the Subject lines of the messages stored there, then delete multiple selected email messages, or all of them at once. It's useful for cleaning spam-ridden mailboxes, or to delete a big attachment without having to download it.