My company has been running GFI Mail Essentials for over 4 years now, and I must say the performance is laughable. Each day, I receive on average approximately 150 SPAM messages. I have set GFI to flag each suspected messaged with [SPAM] in the subject, and those messages go into a specific SPAM folder I created in Outlook. On average, GFI catches about 35% of the junk email sent to me, and usually gets at least one false-positive per day. Simple Outlook rules to filter messages with phrases such as "Canadian Pharmacy" or words such as "Viagra" in the subject line (spelled correctly) catch more bad emails than GFI does. This is despite turning on the Remote Controls over 1 year ago. I would think after that amount of time, I would not have to come in each day and manually delete 60-70 messages that GFI missed with such blatant SPAM subjects as "Replica Watches". On a whim, I installed the much, much less expensive Kaspersky Internet Security suite on my desktop, and I have found it has a 90%+ success rate, though it does, admittedly, hit a fewer false positives. Training seems to improve Kaspersky, though, while it has no discernible effect on GFI. As an added benefit, Kaspersky has caught viruses that Symantec Antivirus has missed. I would never recommend GFI Mail Essentials, and would caution others to look elsewhere for their anti-SPAM software. This is not meant to be an endorsement for Kaspersky. I used CA's product and got similar results. Nor is it meant to bash Symantec, as I have done a good job of that elsewhere online.