CompuTech Support Services uses and sells FuseMail which is our preferred SPAM filter and email continuity solution. It works well at stopping annoying SPAM and bulk mail from hitting your inbox while allowing you to choose different times of the day to receive quarantine reports of what was caught. The solution also works as a continuity service in the event your email server goes down it caches the emails sent to you and delivers them to your mail server when it comes back online, it also has a simple webmail interface to use during that downtime to view and reply to emails if needed.