Microsoft Outlook is a slightly different product from Outlook Express in terms of email management. Released in versions like Microsoft Outlook 2000 and Microsoft Outlook 2003, the Outlook email programs have had and will continue to have their share of users along with Outlook Express. Considering that spam emails are a constant threat to anyone using e-mail as a form of communication, irrespective of which email program is being used, downloading a spam blocker for Microsoft Outlook becomes all the more significant. But the question is, do you really need to download a spam blocker software exclusively for Microsoft Outlook?

Microsoft Outlook comes with an in-built anti-spam, junk email filtering service which uses Microsoft’s SmartScreen Technology. Based on machine-learning Bayesian Technology, the SmartScreen Technology uses probability based algorithms to determine if an email is legitimate or a spam email. The key inputs to the database which helps the SmartScreen Technology detect spam are