Short description of SpamArrow 1.20: SpamArrow is a SpamAssassin based spam blocker to effectively filter out any unwanted spam emails with near zero false positives. This anti spam software is a great add-on for Outlook and Outlook Express by automatically creating integrated spam-fighting toolbar buttons. Unlike most spam filter software products usually do, SpamArrow will never modify your original email message and never add message rules for Outlook or Outllok Express.