CompuSven Incorporated offers the E-Mail Shuttle which provides immediate and automatic migration and synchronization of data from Anywhere2Anywhere.

Migration utilities for various e-mail clients on various platforms. Designed for large numbers of users.

Collected and mirrored sources for software that can use picons databases containing personal icons of users, domains and newsgroups on the net.

General filtering strategies and instructions for using procmail, mailagent, and the Elm filter program to filter mailing list messages into separate folders.

The HTML Writers' Guild's FAQ sheet about mail filtering systems (multiple platforms)

A good collection of links about mail robots and e-mail filtering (somewhat slanted towards Unix applications)

Comprehensive resource for all types of information filtering (not just mail and Usenet). Also an information retrieval (web search) directory.

Convert e-mail client address books between Netscape, Eudora, Juno, Unix Mail, csv, Pegasus, Pine, Databases, ccMail, Microsoft Internet Mail, Spry, Compuserve, ldif and Elm.

A small tool which checks your inbox and produces a RSS news feed from subjects of unread/unseen mails.

MailGoGoGo prevents unwanted e-mail from reaching an inbox. Available for Macintosh and Windows.

JavaScript to clean out quoting marks and extra line breaks in e-mail messages.

Software to receive a server signal to check for new mail. Available for Macintosh and Windows.

Databases, documentation, sources and sampler for picons, personal icons of users, domains and newsgroups on the net.

Small book from O'Reilly.