...It can be used with any other software where you can configure external application to be executed when specific event occurs.
Mail Alert Simple Mailer supports SSL and STARTTLS protocols, so it is compatible with many free e-mail providers like GMail, Hotmail, etc. Unlike other simple command line tools it supports ISO-8859-1, ISO-8859-2 and UTF-8 code pages for national characters. Mail Alert Simple Mailer encrypts SMTP password in configuration file.
YAM (short for Yet Another Mailer) is a commonly used MIME-compliant Internet mailer written for AmigaOS computers. It supports POP3, SMTP, TLSv1/SSLv3, multiple users, PGP, hierarchical folders, filters, a configurable GUI, an ARexx interface and more...
g-milter, or "guerilla milter", is an open source filter for restricting arriving mail not checked by existing filters due to standards compliance. Running this will catch more spam but almost certainly violates e-mail standards. Requires sendmail.
This e-mail notifier is a notify you when an e-mail is set in the accounts setup in the Accounts tab and sits in your tray checking your e-mail account every 15 minutes or less. You can have multiple e-mail accounts setup to check them all at once.
SPASTIC (Simple Procmail Anti-Spam Templates Improved Code) allows filtering of e-mail using simple keywords. The scripts, by default, have different filters for the headers and the body of messages. It also includes a whitelist.
My Community Portal is a all in one internet portal that offers, forum, groups, chat, your own e-mail, search engine, internet directory, your own home page, poll's, dating services, buddy list, MP3 and file sharing, and many more.
A TNEF viewer/extractor. It fully integrates with the KDE environment (mime types, ...) and can be registered as opening application for e-mail clients.
GnoGetIt is a group of PERL scripts that check a POP3 e-mail account and reply with information based on the email received. An example would be stock quotes or weather information. If interested, send a message to r15@users.sourceforge.net