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Email Security

Stop phishing threats others miss

Cloudflare Email Security provides advanced, AI-driven protection against phishing, malware, business email compromise, and ransomware. It prevents these threats from reaching user inboxes and uses machine learning-based behavioral analysis to block targeted campaigns against your organization. Recognized as a Strong Performer in The Forrester Wave™: Email, Messaging, And Collaboration Security Solutions, Q2 2025.

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High Phishing Detection Accuracy

Cloudflare boasts a 99.99% accuracy rate in detecting sophisticated phishing threats, including business email compromise (BEC) and evasive link-based attacks. This high accuracy is powered by AI, global threat intelligence, and expert analysis.

Comprehensive Protection

Cloudflare Email Security extends its protection beyond traditional email to cover targeted phishing attacks via various collaboration tools and messaging applications, such as social media, Slack, Microsoft Teams, QR codes, and SMS text messages.

Flexible and Adaptable

Cloudflare Email Security offers flexible deployment options, allowing for inline deployment, API-based integration, or a combination of both. This flexibility enables organizations to choose the deployment method that best suits their needs and ensures complete protection.

Background Pattern
Email Security

Top Email Security Use Cases

See real-world examples of Cloudflare Email Security

Preventing Ransomware and Malware Attacks

Defend against dangerous attachments and links that attempt to deploy malicious software on end-user devices. Cloudflare Email Security provides advanced, AI-driven protection against phishing, malware, business email compromise, and ransomware, preventing these threats from reaching user inboxes.

Protecting Against Targeted Phishing Attacks

Cloudflare Email Security extends its protection beyond traditional email to cover targeted phishing attacks via various collaboration tools and messaging applications, such as social media, Slack, Microsoft Teams, QR codes, and SMS text messages. This ensures comprehensive protection against multi-channel attacks.

Flexible Deployment for Diverse Environments

Cloudflare Email Security offers flexible deployment options, allowing for inline deployment, API-based integration, or a combination of both. This flexibility enables organizations to choose the deployment method that best suits their needs.

Achieving High-Efficacy Phishing Detection

Cloudflare boasts a 99.99% accuracy rate in detecting sophisticated phishing threats, including business email compromise (BEC) and evasive link-based attacks. This high accuracy is achieved through the use of AI, global threat intelligence, and expert analysis.

Email Security Code Examples

Integrate Cloudflare Email Security into your applications using these code examples.

Background Pattern 
import requests
api_key = 'YOUR_API_KEY'email = 'example@example.com'
response = requests.get(f'https://api.cloudflare.com/client/v4/email-security/verify-sender', headers={'Authorization': f'Bearer {api_key}'})
if response.status_code == 200:    print('Email sender verified')else:    print('Email sender verification failed')
curl -X POST \  https://api.cloudflare.com/client/v4/email-security/scan-email \  -H 'Authorization: Bearer YOUR_API_KEY' \  -H 'Content-Type: application/json' \  -d '{"email": {"subject": "Test Email", "body": "This is a test email"}}'
const axios = require('axios');
const api_key = 'YOUR_API_KEY';const email = 'example@example.com';
axios  .get(`https://api.cloudflare.com/client/v4/email-security/protect`, {    headers: {      Authorization: `Bearer ${api_key}`,    },  })  .then((response) => {    console.log('Email protected');  })  .catch((error) => {    console.error('Email protection failed');  });