Spam Prevention Tools Web Products

Provides folders for blocked and email to be reviewed. It becomes more accurate with use. Integrates with Microsoft Outlook but does not work with any other e-mail clients. Provides a 21 day free trial.
Price: 27.95 Euros
McAfee SpamKiller
Uses Bayes filtering and filters email that attempts to scam you. It protects against phishing attacks. Allows you to create a friends list and whitelist. It provides additional helpful features.
Price: 34.99 US Dollars
Uses a whitelist to manage mail. It automatically learns whose mail you want to see in your Inbox and filters all other messages safely to the quarantine. It allows optional challenge response to unknown senders. Checks to see if the sender is spoofing an email address.
Price: 29.95 US Dollars
Ella for Spam Control
It integrates seamlessly with Outlook and Outlook Express. It keeps important email in your inbox, moves your electronic newsletters into their own folder, and gets rid of spam. They claim near 100% accuracy. There is a free 15 day trial version.
Price: 29.95 US Dollars
ChoiceMail One
This is a permission based spam blocker that customizes itself to you. It assumes email is spam unless it knows otherwise only allowing approved email to get to your inbox. It allows email from people you trust to come through automatically and lets you create simple rules to approve email that is important to you. There is a 14 day free trial.
Price: 40.00 US Dollars
An e-mail client which protects you from malicious, virus-ridden spam written using Java ™ technology, which can run on any modern computer in a secure environment apart from your native operating system. Free and $25 for an upgrade.
Price: 0.00
A tool used to segregate unwanted mail (spam) from the mail you want (ham). Before SpamBayes can be your spam filter of choice you need to train it on representative samples of email you receive
Price: 0.00
It allows you to set personal filtering rules and threshold level. Works with Microsoft Outlook, MS Outlook Express, Hotmail and Eudora. 30 day free trial available. 30 day money back guarantee.
Price: 19.95 US Dollars
Barracuda Spam Firewall 300
The Barracuda spam firewall acts as a mail relay server and works to block spam before it gets to your mail server. It blocks a large amount of spam based on blacklisted servers known for sending spam. It can be set to tag spam or block spam and allow users determine what is spam. Price does not include service and support contracts.
Price: 1399.00 US Dollars