mxORB   
http://www.mxorb.com

mxORB is a server-side spam filter that consistently blocks over 98% of unsolicited commercial email (also known as spam) at a fraction of the cost of other filtering solutions. mxORB is packed with all of the features you will need to eliminate spam. The amazing low price coupled with a success rate of over 98% gives it an unassailable position in today's marketplace. mxORB can be deployed in two different ways, either directly on your Exchange Server system, or on a separate IIS SMTP mail relay system. mxORB makes use of a number of techniques to filter spam, including: use of real-time Internet databases of known spam senders; filtering that blocks messages based on their content; and attachment filters that can reduce the risk of security incidents such as virus infection. All filtering is performed on the server-side allowing you to protect your email system without the need to configure individual client workstations.

SpamWeed Anti-Spam Filter   
http://www.spamweed.com

SpamWeed is an innovative spam filter for all POP3 email clients (Outlook, Outlook Express, Eudora, Incredimail, Pegasus Mail and others). It uses a combination of statistical classification, ID-tracking and other state-of-the-art technologies. SpamWeed can block over 95% spam instantly with almost no false positives. Emails classified as spam are placed in a quarantine area and can be safely retrieved or deleted. Auto-learning feature further increases detection accuracy by analysis of users' correspondence. The program can even neutralize all current and future email viruses. While it's powerful and intelligent, it's also very easy to install and requires almost no maintenance. Your time is precious, let SpamWeed handle all those annoying junks.

TigerTom Bulk Email Software   
http://www.tigertom.com

Bulk email client. Can import first and second names, as well as email address, from delimited, flat-file text or CSV databases. Allows personalisation of each email sent. Each email sent has a small ad for the author's web site at the very bottom. This software is not suitable for spam (unsolicited commercial email).

Webroot Spam Shredder   
http://www.webroot.com

Halt intrusive spam in its tracks! New from Webroot, the leader in online privacy and protection software, Webroot Spam Shredder filters undesired commercial advertising to save you time and hard drive resources. It auto-detects and configures Outlook, Outlook Express and Eudora email accounts for immediate relief from spam. Simple, manual configuration is necessary for other POP3 mail clients, however Webroot Spam Shredder does not currently support web-based email accounts. Already pre-educated to sort some desired messages from spam email, the smart learning engine studies your decisions to keep or delete spam to more effectively sort future email. Whitelist and Blacklist features let you identify email that should be immediately delivered or instantly deleted. Outlook, Outlook Express and Eudora users can instantly import their contact list into the Whitelist. Webroot Spam Shredder quarantines suspected spam before it reaches your inbox, and messages can be deleted or safely held for later review. The spam threat database is regularly updated to protect you from the latest spam tactics as they emerge. You can specify your desired level of protection from spam and the size and type of messages to scan with Webroot Spam Shredder's easy-to-use controls. Webroot Spam Shredder is backed by Webroot's expert technical support team via email or phone.

Chrysanth Mail Manager   
http://www.chrysanth.com

Chrysanth Mail Manager is a spam blocker designed from the ground up to help users effectively stop junk emails or "SPAM". This spam blocker helps users automatically identify, filter and stop junk emails on their mail server without having to download the junk emails. This saves on time and resources, conserving bandwidth and making everyone more productive and email more useful. This spam blocker has a range of useful features and is easy-to-use. The user interface is intuitive and makes this spam blocker easy to set-up and use. This spam blocker also provides you with analytical graphs and figures so you can better understand just how much junk emails you have successfully stopped. Among its features are support for multiple email accounts, support for "whitelists", "blacklists", as well as the ability to bounce junk emails back to those who sent it. The filters are very easy-to-use and can be defined by you very quickly. Chrysanth Mail Manager offers a Startup Wizard to help new users, and features to mark ALL email headers to be deleted or bounced. This spam blocker improves as you use it and so it becomes better and better at stopping junk emails. Chrysanth Mail Manager also has a number of other handy features including an internal email viewer. This lets you read emails before you can see them in your regular email client. Perhaps best of all, this spam blocker puts you in control and in charge of your email. You create filters that meet your needs, you define your whitelists, define your blacklists, and more. Chrysanth Mail Manager is intuitive and easy-to-use. You can set it up quickly and be working with it in a very short time. It has all the features and functions you need to adequately stop all the junk emails that come in each day. Try this spam blocker and see the result yourself.