The best Messaging Security vendors are Cisco Email Security (ESA), Fortinet FortiMail, Proofpoint Email Protection, Barracuda Email Security Gateway, and Sophos Email Appliance.
Cisco is the top solution according to IT Central Station reviews and rankings.
One reviewer writes: "Customized filtering has been very effective and useful for us", and another reviewer writes: "While the tool does a good job of blocking malicious emails, it does have limitations with its sandboxing".
The 2nd best product is Fortinet FortiMail. A user writes: "A full-featured email gateway that monitors email intelligently to block, isolate and assess traffic",
and another reviewer writes: "Actively works to ensure reliable delivery and containment of threats and spam".
See our free Buyer's Guide for Messaging Security.