Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.
Cisco IronPort Web Security Appliance - Cisco IronPort Web Security Appliance
Symantec Email Security.cloud - Symantec Email Security.cloud provides always-on, inbound and outbound email security against malware, targeted attacks, and advanced threats
Palo Alto Networks WildFire - Firewall and Threat Intelligence
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.
FireEye Security Suite - An enterprise-grade security solution for mid-market customers, combining detection, protection, and response capabilities for network, email and endpoint.