Best Secure Email Gateway Software for Windows

Fortinet is a global leader in cybersecurity solutions, known for its comprehensive and integrated approach to safeguarding digital networks, devices, and applications. Founded in 2000, Fortinet provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. At the core of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly integrates security tools to deliver visibility, automation, and real-time threat intelligence across the entire network. Trusted by businesses, governments, and service providers worldwide, Fortinet emphasizes innovation, scalability, and performance, ensuring robust defense against evolving cyber threats while supporting digital transformation and business continuity.

25% of the 100 German companies with the highest turnover choose Zertificon. Z1 SecureMail Gateway is our highly automated Enterprise Email Encryption solution for effortless, secure communications with anyone, anywhere. Your entire organization encrypts and decrypts, just as well manages & verifies email signatures smoothly in the background. Z1 SecureMail Gateway requires minimal maintenance. And the browser-based admin interface needs no special skills. Keys are managed automatically & central policies enforce security. Integration is fast into your Cloud or On-premises email infrastructure. Your workflows and business are uninterrupted — no employee training needed plus frictionless experience for recipients. With Z1 SecureMail Gateway, encryption is centrally configurable and proofed against human error. You easily achieve and maintain compliance and the highest security standards. You also own all encryption keys and attain German-engineered data sovereignty with no backdoors.

Keep your email infrastructure and users safe— whether on-premises or in the cloud. Identify and mitigate advanced email threats—including ransomware, business email compromise (BEC), and phishing—with Trellix Email Security. You’ll get leading detection and response capabilities to build a trusted, resilient email environment. Identify current threats quickly and accurately with prioritized alerts to help analysts take immediate action. Keep your email safe—whether it’s hosted on-premises or in the cloud—with leading sandbox technology, AI, and machine learning. Connect with as many as 650 Trellix solutions and third-party products to deliver insights and create a unified, living security ecosystem. Minimize the risk of breaches and identify, isolate, and protect against advanced URL and attachment-based attacks with this on-premises solution. Choose Advanced Threat mode to unearth malicious URLs with custom plug-ins, or Full Hygiene mode to reduce impersonation, BEC, and more.