yMail can be used as a spam cleaner for your existing email setup, and also as a standalone email client. yMail's spam filters use Bayesian techniques. You can show yMail which messages are spam and which are not (before you even download them to your computer!) and each time will adjust its filters to suit. After a few days, it will be able to sort mail quickly and efficiently without any input.

CMailServer, an easy to use email server software and web mail server software, allows you to send and receive emails across the Internet and has supports for client email applications such as Outlook, Eudora etc and web mail. It has supports for ESMTP and multiple domains. Can run as an NT service. Web mail function is based on ASP and IIS.

FastTrack Mail offers a new, simple and very convenient interface for processing e-mail and it's a powerful email management tool with features to increase your productivity and enhance your communications. The program provides extensive filtering and processing capabilities for incoming correspondence and requests. It allows automatic sorting of incoming messages based on preset criteria and their placement in individual mailboxes.

FastTrackMail Lite offers a new, simple and very convenient interface for processing e-mail and it's a powerful email management tool with features to increase your productivity and enhance your communications. The program provides extensive filtering and processing capabilities for incoming correspondence and requests. It allows automatic sorting of incoming messages based on preset criteria and their placement in individual mailboxes.

With this business email client, you can send personalized messages to your contacts with mail merging, perform Bayesian SPAM and message filtering, manage up to 250 mail groups, download multiple e-mail accounts in one mailbox or read messages live on your server without downloading, allows shared mailboxes used simultaneously by networked users, and as an option, can be combined with Time & Chaos address book for an integrated info solution.

E-mail Commander is a portable email client that does not require any kind of formal installation onto a computer's permanent storage device to be executed, and can be stored on a removable storage device such as a USB flash drive and used on multiple computers (see http://www.usbspase.com).

VanMail is a powerful POP3/SMTP email client that allows you to manage your email with ease. With VanMail's powerful built-in SPAM protection, you control the emails you want to receive. VanMail comes with a powerful rules based system where you can create rules to block emails, whitelist rules (i.e. never block), auto-response rules, alert rules, etc. VanMail even comes with an advanced challenge-response system.

encrypted::Mail allows users to send encrypted emails to anyone with ease, regardless of the users or recipients existing mail client. encrypted::Mail uses symmetric encryption and allows senders to add a pass phrase for additional security.

This program includes a few interesting and useful technologies i.e.
- A Simple System Tray IMAP Mail Client (not available so far)
- System Tray Implementation in Visual C#.Net
This includes source code, so you could use it as it is or play around with the code to satisfy your requirements

This powerful command-line email client is designed to automate scheduled file sending in your company. With the built-in ZIP archiver, encryption support and log file support it will process all your daily email jobs.

This program can send E-mail notification message from a file. It's a simple way to control remote processes posting a messages to specified recipient. If you run a long process and want to know result of the process or a program then all you need is to launch this programm and pass as a parameter file name where proper notification message is placed.

Mail-Commander is a super-fast email client program that does it all - from the everyday sending and receiving of e-mails to managing mailing lists and customer requests. You can set up auto-replies to incoming mail using pre-set templates. Plus you can set up the program to automatically process newsletter subscriptions and requests to be removed from your mailing list.