Ensnare is a spam filter that monitors your POP3 accounts and filters out suspected spam messages. The spam is removed from your account, so that it is not downloaded into your email program. You can then review the filtered messages from the program interface and restore any of them if necessary. In addition to a built-in detection algorithm, Ensnare offers a combination of whitelists, blacklists, and an adaptive statistical filtering system. This allows you to exclude certain emails or completely block others.