SSID-based SMTP server changer for Evolution is a simple script that uses gconf and NetworkManager (via D-Bus) to check which wireless network (SSID) you are currently connected to, and updates Evolution's accounts list (in gconf) to point to the correct SMTP server for that network. It is useful for when roaming between wireless networks that are connected to different ISPs.
Spam Trainer makes it easier for GNOME users to train spam filtering software (e.g. SpamBayes or SpamAssassin) that "learns" how to tell the difference between real email (ham) and unsolicited messages (spam). Not all email clients have spam filtering (and training) built in, and training external filtering programs can be fiddly. Spam Trainer provides easy (drag and drop) training from the Evolution mail client, and should work just as well with any email client that supports the drag and drop protocol implemented by the GTK+ toolkit.
psi-imapmail is a small but nevertheless highly configurable gdesklet which fits perfectly into a psi- themed sidebar. It reports the status of an IMAP mailbox (shows the amount of new messages/total messages) and is able to utilize both SSL-secured (port 993) and non-secured (port 143) connections.
gnubiff is a mail notification program that periodically checks for mail and displays headers when new mail has arrived. It supports multiple mailboxes, pop3, apop, imap4, mh, qmail and mailfile, SSL and certificates, GNOME with integration to the panel, GTK standalone, automatic detection of mailbox format, mail header and content display, PNG animation, HIG 2.0 compliance, and spam filtering.
Akeni Instant Messaging Server Pro is a client/server instant messaging platform that allows companies to host their own secured private IM system. The client has an user interface similar to AIM, ICQ, or MSN Messenger. It supports all the standard IM features such as chat, group conference, presence management, file transfer, offline messages, and emergency alert/notification. Extra features include contact management and optional tabbed chat sessions. The server has advanced administration tools for managing user accounts, client-side logging capabilities, and peer-to-peer file transfers. It can be set up on a private network without connecting to the Internet, and can easily be set up for use inside and outside of the company firewall.
Mail Notification is a status icon (aka tray icon) that informs you if you have new mail. It works with system trays implementing the freedesktop.org System Tray Specification, such as the GNOME Panel Notification Area, the Xfce Notification Area, and the KDE System Tray. Mail Notification features include multiple mailbox support, Evolution, Gmail, IMAP, Maildir, mbox, MH, Mozilla products, POP3, Sylpheed, Windows Live Hotmail and Yahoo! Mail support, SASL and APOP authentication support, SSL/TLS support, automatic detection of mailbox format, immediate notification, message popups, and HIG 2.0 compliance.