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Email Security

Stop phishing threats others miss

Effortlessly block and isolate phishing threats before they ever reach your users. Cloudflare Email Security provides high-efficacy, AI-powered protection against email-borne malware, business email compromise (BEC), and multi-channel (link-based) attacks.

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99.99% AI-powered detection accuracy

Stop sophisticated threats before they reach your users. Our AI engine blocks BEC and evasive link-based attacks across all your communication channels with leading precision.

Comprehensive multi-channel defense

Modern phishing goes well beyond the inbox. Protect your organization from targeted, cross-platform attacks spanning email, SMS, social media, Slack, and Microsoft Teams to prevent unauthorized access.

Flexible deployment options

Deploy inline, via API, or use a hybrid approach to fit your architecture. Secure your environment from end to end with pre-delivery filtering, real-time link analysis, and instant post-delivery retractions.

Fast and secure by default

By merging real-time threat signals with advanced AI and global intelligence, our unified detection engine helps stop malicious emails instantly.

Background Pattern
Email Security

You can use Email Security to:

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Stop BEC attacks

Detect deceptive attacks that impersonate employees and vendors to steal sensitive data or extract fraudulent payments.

Block and isolate multi-channel attacks

Protect your team from malicious links, QR codes, and delayed phishing tactics across email, messaging, and collaboration apps.

Prevent ransomware and malware

Defend your organization against dangerous attachments and malicious links designed to infect end-user devices and compromise your network.

Frequently asked questions

Cloudflare Email Security is a cloud-native defense platform that uses AI to block phishing, business email compromise (BEC), and malware before they reach users. It provides multi-channel protection across email, SMS, and collaboration apps to prevent credential theft and unauthorized network access.
Administrators can deploy Cloudflare Email Security inline (via MX records), via API (for platforms like Microsoft 365 and Google Workspace), or using a hybrid approach. This flexibility enables pre-delivery filtering, real-time link analysis, and instant post-delivery message retractions without disrupting existing mail flow.
Cloudflare Email Security uses a high-efficacy, AI-powered detection engine to analyze message context, sentiment, and sender identity. This allows it to identify and block sophisticated, text-only impersonation attacks designed to trick employees into making fraudulent payments or exposing sensitive data.
Yes. Cloudflare provides comprehensive multi-channel defense to secure modern workflows. It detects and blocks malicious links, QR codes, and delayed phishing tactics across SMS, social media, Slack, and Microsoft Teams.
Cloudflare defends against ransomware and malware by actively filtering dangerous attachments before delivery. For suspicious email links, it natively integrates with Cloudflare Remote Browser Isolation (RBI) to open the URL in a secure, remote cloud session, ensuring malicious code cannot execute on the user's local device.

Powerful primitives, seamlessly integrated

Built on systems powering 20% of the Internet, Email Security runs on the same infrastructure Cloudflare uses to build Cloudflare. Enterprise-grade reliability, security, and performance are standard.
Compute
Browser Run Automated browsers
Containers Any language, anywhere
Durable Objects Stateful compute
Sandboxes Secure code execution
Workers Global serverless functions
Workers for Platforms Programmable Platform Solutions
Workflows Process orchestration
Storage
Artifacts Git-native versioned storage
D1 Serverless SQL
Data Platform Ingest, Catalog & Query
Hyperdrive Global databases
Queues Message processing
R2 Egress-free storage
KV Ultra-fast key-value storage
AI
Agents Build stateful AI agents
AI Gateway AI observability
AI Search Instant retrieval
Vectorize Vector database
Workers AI Edge AI models
SASE / Zero Trust
SASE Cloudflare SASE platform
Access Zero trust access to private resources
CASB SaaS and cloud posture
Data Loss Prevention Protect sensitive data
Gateway Web filtering
Browser Isolation Secure web browsing
WAN Cloud-delivered networking
Email Security Phishing protection
Security
DDoS Protection Mitigation Solutions
Rate Limiting Abuse prevention
SSL Secure Your Site with SSL
Turnstile A CAPTCHA Replacement Solution
WAF Web Application Firewall
Magic Transit DDoS Protection for Networks
Client-Side Security Prevent browser supply chain attacks
Bot Management Block bad bots
Network & Content Delivery
CDN Faster delivery & caching
DNS Fast DNS
Load Balancing Zero downtime
TURN / SFU Real-time infra
Analytics Web Performance & Security

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