Trend Micro InterScan Messaging Security VS Egress Switch

FortiMail - Fortinet Email security is designed to block ransomware, phishing, and other cyber threats seeking entry via incoming email and outgoing messages don’t improperly leak sensitive data.

Barracuda Email Security Service - Secure Email Gateway

Cryptshare - Cryptshare is an online security company that gives its facility in securing your emails, uploading large files on cloud platforms to provide you with its compliance.

SonicWALL Email Security Series Appliances - SonicWall Email Security appliances are ideal for organizations that need a dedicated on-premises solution.

Proxmox Mail Gateway - Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.

Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .