Compare the Top Secure Email Gateway Software for Windows as of February 2026

What is Secure Email Gateway Software for Windows?

Secure email gateways protect organizations from email-based threats such as phishing, malware, spam, and data breaches. They analyze incoming and outgoing messages to detect suspicious content, malicious attachments, and unauthorized data sharing. These gateways enforce email security policies, filter harmful traffic, and provide encryption to safeguard sensitive communications. Many platforms also integrate with cloud email services like Microsoft 365 and Google Workspace to extend protection across hybrid environments. Ultimately, secure email gateways help maintain compliance, protect confidential information, and ensure safe, reliable business communication. Compare and read user reviews of the best Secure Email Gateway software for Windows currently available using the table below. This list is updated regularly.

  • 1
    Fortinet

    Fortinet

    Fortinet

    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.
  • 2
    RevBits Email Security
    RevBits Email Security is a next-generation email security solution that aims to close major gaps in the current marketplace. Leveraging sophisticated and unique algorithms such as a patented page impersonation detection methodology, Revbits Email Security achieves the deepest level of email analysis. For every email, RevBits Email Security displays a composite, probabilistic score of each email's risk level paired with full details for continuing user education. RevBits Email Security enhances Email Security Architecture RevBits Email Security enhances email security by detecting and blocking sophisticated malicious emails that get past the outer layers of an organization's email security stack. With RevBits Email Security, organizations can protect the last point of email interaction – the employee endpoint.
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