3.28

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, MetaDefender Aether Sandbox for advanced dynamic threat analysis, and Deep CDR™ (Content Disarm & Reconstruction) against file-based threats. By combining signature-based detection, behavioral sandboxing, and proactive content sanitization, email security extends beyond traditional defenses to identify and neutralize both known and zero-day threats. With multi-layered, proactive protection and advanced technologies designed to combat evolving attack techniques, the solution deploys rapidly and integrates seamlessly without disrupting mail flow.

Enhancements

• Added batch download for quarantined emails with optional password protection and skip-report support

• Added "No Threat Detected" verdict policy option

• Added AI-generated threat descriptions to event details

• Added Label filter to Events advanced filtering

• Added Origin information to Event and Quarantine details

• Added optional Country/City column to Events list

• Added icons for unsupported file types and sanitization failures within archives

• Split Action Items into Pending and Done sections

• Added audit history entries for Action Item Done/Reopened actions

Bugs

• Fixed SMTP relay failing to relay emails with non-RFC-compliant Message-ID headers

• Fixed missing allowlisted file in scan result details

• Corrected "Blocked" label to "Detected" in the Threat Detection drawer