Cloud Email Security for Microsoft 365

Cloud Email Security to Reduce Human Risk

KnowBe4 Cloud Email Security offers a suite of AI-driven products designed to detect and prevent advanced email threats across inbound and outbound communication. With behavioral intelligence and dynamic protection, these products reduce your largest attack surface: human error.

Defend - Stop Advanced Inbound Email Threats

Detect and block phishing, ransomware, and business email compromise with behavioral AI and self-learning threat models. Defend enhances Microsoft 365’s built-in security by catching targeted attacks that legacy secure email gateways (SEGs) miss.

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Prevent – Outbound Email Protection and Data Loss Prevention

Prevent data breaches before they happen. This email security product monitors outbound email in real-time and alerts users to risky behavior, such as accidental sends or misdirected emails. Seamlessly integrated with Microsoft Outlook and Office 365, Prevent empowers users to correct mistakes and avoid costly data loss.

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Protect - Effortless Email Encryption

Simplify secure communication with user-friendly, policy-based email encryption. Protect eliminates the friction of traditional encryption tools, offering certified protection that automatically enforces your organization's security policies.

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Why Choose KnowBe4 Cloud Email Security for Microsoft 365

Get cloud email security products that go beyond Microsoft 365's native defenses. KnowBe4's offerings integrate seamlessly to detect and prevent sophisticated inbound and outbound threats--including phishing, business email compromise, and data loss--that traditional secure email gateways (SEGs) often miss.

Stop up to 97% more targeted email attacks

Detect and block advanced threats like business email compromise, ransomware, and supply chain attacks--threats that evade traditional filters. KnowBe4's behavioral AI closes the gaps left by legacy SEGs.

Uncover 10x more hidden data breaches

Go beyond surface-level detection with contextual machine learning and relationship mapping. Understand how users share data, with whom, and what's normal--so you can flag and stop suspicious activity before it leads to a breach.

Maximize Microsoft 365 Security Across All Tiers

Extend threat protection across all Microsoft 365 license levels. Our native integration offers zero-friction deployment, streamlined management, and enhanced protection without requiring additional infrastructure.

92%

92% of organizations were victims of phishing

91%

Over 91% of organizations had an outbound email data breach

99%

99% of Cybersecurity leaders are stressed about email security

People Are Your Biggest Risk and Are Most Vulnerable When Using Email

Combining intelligent detection with real-time education, KnowBe4 Cloud Email Security helps you:

Detect and Prevent Inbound and Outbound Email Threats

Prevents advanced phishing threats, data loss and data exfiltration AI models and a zero-trust approach combine to detect the full spectrum of phishing threats and anomalies in human behavior that lead to data loss and data exfiltration.
Provides continuous education using real-time teachable moments Contextual banners and prompts are delivered at the point of risk, augmenting security awareness and training through real-time teachable moments.
Strengthens security posture through adaptive AI protection Sophisticated AI models continuously learn from threats and user behavior, providing adaptive security that evolves with emerging attack vectors and organizational communication patterns.

Seamless Integrations: Fortifying Your Security Ecosystem

We integrate with best-in-class technologies to make our Cloud Email Security solution the center of our customers' data and cybersecurity defense strategies.