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Horde class that attempts to automatically determine configuration options for various remote mail services (IMAP/POP3/SMTP).

This Horde package provides various utility classes for dealing with Microsoft MAPI structured data.

Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different. Some feautures: Connection cache for SMTP, DSN status notifications, IP version 6, Plug-in support for multiple SASL implementations (Cyrus, Dovecot), TLS encryption and authentication, Configurable status notification message text, Access control per client/sender/recipient/etc, Content filter (built-in, external before queue, external after queue), Berkeley DB database, LDAP database, MySQL database, PostgreSQL database, Maildir and mailbox format, Virtual domains, VERP envelope return addresses and others.

Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different. Some feautures: Connection cache for SMTP, DSN status notifications, IP version 6, Plug-in support for multiple SASL implementations (Cyrus, Dovecot), TLS encryption and authentication, Configurable status notification message text, Access control per client/sender/recipient/etc, Content filter (built-in, external before queue, external after queue), Berkeley DB database, LDAP database, MySQL database, PostgreSQL database, Maildir and mailbox format, Virtual domains, VERP envelope return addresses and others.

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no Javascript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has a all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation

Excerpted from the BLURB file... TkRat is a graphical Mail User Agent (MUA) which handles MIME, POP3 and IMAP4.1. It is mainly written in C, but the user interface is done in Tcl/Tk. The following is a non-exhaustive list of the capabilities: * Multilingual interface (English, Swedish and Italian included) * MIME support: text/plain, image/gif and message/rfc822 including multipart/mixed and multipart/alternate, Quoted-printable and Base64 encoding. * Supports MIME in headers * Composing: (tk's text widget plus many extensions) or an external editor of your choice. * Message database * Virtual folders: mbox, mh, IMAP or POP * Message hold: suspend the composing, continued later * Watcher: When the program is iconified it checks the mailbox * Uses sendmail OR direct SMTP or other MA * Supports Delivery Status Notifications - DSN ESMTP sendmail-8.7 * Supports PGP/MIME and "old-style PGP message receipt"

Phplist is an email announcement delivery system. It is great for newsletters, publicity lists, notifications, and many other uses. Phplist has many features, including: * double opt-in subscription mechanism * scheduling * RSS * list segmentation * click-tracking * attachments * bounce management

POPFile is an automatic mail classification tool. Once properly set up and trained, it will scan all email as it arrives and classify it based on your training. You can give it a simple job, like separating out junk e-mail, or a complicated one -- like filing mail into a dozen folders. Think of it as a personal assistant for your inbox. Since v0.21.0, POPFile supports multiple user with a single instance. Using ${LOCALDIR}/sbin/popfile.sh, you can start your own POPFile easily; it uses ${HOME}/.popfile as a working directory. Note for old POPFile users: copy messages/ and corpus/ directory to your ${HOME}/.popfile directory (if not, create it), then start popfile.sh.

The postfix-logwatch(1) utility is a Postfix MTA log parser that produces summaries, details, and statistics regarding the operation of Postfix. A key feature of postfix-logwatch is its ability to produce a very wide range of reports with data grouped and sorted as much as possible to reduce noise and highlight patterns. Brief summary reports provide a quick overview of general Postfix operations and message delivery, calling out warnings that may require attention. Detailed reports provide easy to scan, hierarchically-arranged and organized information, with as much or little detail as desired.

Policyd is an anti-spam plugin for Postfix (written in C) that does : o Greylisting, o Sender-(envelope, SASL or host / ip)-based throttling (on messages and/or volume per defined time unit), o Recipient rate limiting, o Spamtrap monitoring / blacklisting, o HELO auto blacklisting o HELO randomization preventation, o Sender mail addresses or domain Sender blacklisting