KnowBe4 Cloud Email Security

Connects to Microsoft 365 or Google Workspace via native APIs for visibility into internal and delivered mail, enabling post-delivery clawback without changing MX records.

Analyzes email body text semantically to detect social engineering, pretexting, and urgency manipulation in messages that contain no malicious attachments or URLs.

Builds per-user and per-vendor communication baselines from historical email patterns to detect anomalous content, timing, or sender behavior without relying on signatures or blocklists.

Detects AI-generated impersonation in email-borne fraud - synthetic text, deepfake audio and video lures, and cloned sender styles - beyond signature and rule-based content analysis.

Inserts dynamic banners into delivered messages flagging risk signals such as first-time senders, lookalike domains, or unusual payment requests at read time.

Detects signs of internal mailbox compromise (anomalous login geography, mail forwarding rule creation, unusual send volume), and can trigger automated session revocation.

Detects compromised or spoofed third-party supplier accounts by analyzing communication pattern deviations, domain aging, and content signals, targeting invoice fraud and payment redirection attacks.

Separates newsletters and bulk mail from threats by routing them to dedicated folders, refining classification from how each user files messages.

Automates the intake, deduplication, and triage of user-submitted suspicious emails, cross-references against in-flight campaigns and triggers retroactive remediation across all recipients.