Version 3.16

Release dateVersion
10th December 20253.16

MetaDefender™ Cloud Email Security is an advanced solution that bolsters Microsoft 365’s native email defenses with industry-leading threat prevention. It is purpose-built to detect and neutralize malware, zero-day exploits, and embedded file-based threats before they reach the inbox.

This solution is powered by OPSWAT’s Metascan™ Multiscanning, adding more AV (antivirus) engines, and Deep CDR™ (Content Disarm & Reconstruction) against file-based threats. With multi-layered, proactive protection, email security goes beyond signature-based detection with advanced technologies against evolving threats. Designed for seamless integration, the solution deploys rapidly without disrupting mail flow.

Features

Metascan™: Advanced Threat & Zero-day Malware Prevention

  • Detects known and unknown threats with up to 99.2% efficacy using 5 to 17 leading anti-malware engines running in parallel. Metascan™ increases detection rates, reduces false negatives, and shortens time-to-detection for zero-day malware.

Deep CDR™: Protection Against File-Based Attacks

  • Neutralize file-borne threats by removing active content, scripts, macros, and embedded objects from documents and media files. This proactive sanitization ensures only safe, usable files reach the inbox—without disrupting business workflows.

For further information on how to integrate MetaDefender™ Cloud Email Security with Microsoft 365/Exchange Online, refer to the Onboarding section.

Policy Management

  • Define policies based on email direction and target audiences (groups or members).
  • Clearly view and manage verdict actions in a centralized summary.

For more information, refer to the Policies section.

Improved Visibility & Real-Time Monitoring

The new Dashboard and Events View provides a centralized interface for monitoring, investigation, and response, allowing you to:

  • Visualize traffic flow (inbound, outbound, internal).
  • View real-time statistics on allowed, blocked, and sanitized emails.
  • Quickly identify top blocked file types, senders, and recipients.

For more information, refer to the Dashboard, Events and Quarantine sections.

Fully Customizable Notifications & Banners

Improve communication with your users and admins through rich, personalized content.

Email Notification Templates

  • Create and edit dynamic templates.
  • Include conditional formatting based on verdict severity (e.g., malware, suspicious, encrypted).
  • Configure different templates per verdict and action.

For more information, refer to the Email Notifications section.

Email Banner Templates

  • Design custom banners to alert users in their inbox.
  • Choose between HTML or plain text formats.
  • Perfect for warning users of threats or displaying additional context.

For more information, refer to the Banners section.
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On This Page
Version 3.16FeaturesMetascan™: Advanced Threat & Zero-day Malware PreventionDeep CDR™: Protection Against File-Based AttacksPolicy ManagementImproved Visibility & Real-Time MonitoringFully Customizable Notifications & BannersEmail Notification TemplatesEmail Banner Templates