Outlook Express Spam Filter is an Outlook express plug-in that automatically and efficiently filters spam and phishing fraud. Whenever new mail arrives your inbox, it will automatically be tested by the filter, The Spam mail will be moved to your spam folder instantly. Emails the filter may have difficulty classifying, go to a special "Unsure" folder. Its Bayesian spam filter can learn from your own personal email habits, and you can also train the mails as spam or not spam by yourself to make the filter more precise.