Barracuda Email Security Gateway
Proofpoint Email Security and Protection
Symantec Email Security.cloud
Cisco Email Security
FortiMail
Area 1 Security
Security Gateway
Paubox
Emsisoft Online Armor Firewall
TinyWall
Windows Firewall Control
Windows 10 Firewall Control
GlassWire
Total Defense Internet Security Suite
Little Snitch
Ashampoo FireWall
Proofpoint Email Security and Protection - Learn about Proofpoint's email security solutions that protect organizations against threats such as email fraud, phishing, spam, bulk email, and viruses.
TinyWall - Lightweight and non-intrusive firewall
Symantec Email Security.cloud - Symantec Email Security.cloud provides always-on, inbound and outbound email security against malware, targeted attacks, and advanced threats
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.