Core Email Protection

AI Email Security That Stops 99.999% of Threats

Get continuous email protection powered by multi-model AI. Deploy via API or inline.

Security professional reviewing a screen, representing AI-powered email threat detection and protection.

OVERVIEW

Stop more novel threats and AI-powered attacks

Protect Microsoft 365 and Google Workspace against phishing, BEC, and other evasive attacks with industry-leading email security that detects 27% more novel threats than leading competitive solutions.

Detect new threats faster

Identify new and evasive attacks with behavioral AI informed by thousands of threat campaigns and trillions of emails, URLs, and attachments.

Achieve total visibility 

See where threats come from, what they hit, and what stays safe with interactive maps powered by deep threat intelligence.

Deploy via API in 48 hours

Integrate with Microsoft Graph API for rapid deployment, with automated learning, to protect your environment in just days.

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WHY IT MATTERS

Email threat volume has nearly doubled amid a wave of new AI-amplified attacks

Threat actors generate novel, personalized lures at machine speed, using compromised and spoofed accounts to bypass built-in defenses.

94 %
growth in email threats year over year

Proofpoint, 2026.

27 %
increase in novel campaigns like BEC

Proofpoint, 2026.

4.5 x
higher click rate for AI-generated phishing vs. traditional phishing

Microsoft, 2025.

Proofpoint threat landscape dashboard showing daily email threat message volume by threat family, including credential phishing, malware, payment fraud and keyloggers.

PRODUCT DETAILS

Get unparalleled protection and flexible deployment 

Proofpoint Core Email Protection blocks 99.999% of advanced email threats, including phishing attacks, BEC, ransomware, and beyond. Powered by AI, it enhances Microsoft 365 and Google Workspace with real‑time threat intelligence, machine learning, and behavioral analysis. 

Features

Multi-Model Behavioral AI Detection

Detect 27% more novel threats than with other email security solutions, with the industry's lowest false positive rate. 

Continuous Protection Architecture 

Leverage API and SEG deployment options for inline, in-mailbox, post-delivery, and click-time protection. 

Unified Visibility and Response

Unify protection across inbound and internal email, messaging, ATO, supplier, and credential compromise with Threat Protection Workbench. 

Instant Risk & Business Value Insights

Gain on-demand visibility into campaigns, objectives, efficacy, and same-industry benchmarking.

Intuitive End User Experience

Deliver real-time user coaching with dynamic warning banners for suspicious mail, and behavioral learning for spam and graymail.

Agentic Automation

Automate repeatable security work for thousands of user-reported emails via Satori Abuse Mailbox Agent.

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“Proofpoint offers a broader set of email security and infrastructure tools than its competitors and strong detection capabilities.” — Gartner

Learn more

SEE WHY ORGANIZATIONS CHOOSE PROOFPOINT

What to look for in an email security solution

Capability What to look for Proofpoint Core Email Protection
Behavioral threat analysis Behavioral context that detects malicious intent beyond known threat indicators Uses multi-model behavioral AI to detect novel threats, BEC, and account compromise 
Continuous protection Coverage that continues before, during, and after email delivery Protects inline, in-mailbox, post-delivery, and at click time across API and SEG deployments 
Threat investigation Shared threat visibility that reduces fragmented investigations Unifies inbound, internal, account, and supplier threats in one investigation experience 
Microsoft 365 integration Detection and response integrated into existing Microsoft 365 workflows Adds API-based protection with detections visible in the Microsoft 365 console 
Domain fraud protection Protection against impersonation beyond the email environment Combines email protection with domain fraud detection and takedown 
Outbound protection Controls that address inbound attacks and outbound data risk Extends email security to outbound threats and sensitive data 

See Core Email Protection in Action

Request a demo

See how Core Email Protection stops phishing, BEC, and AI-generated attacks that bypass Microsoft 365 and Google Workspace's built-in defenses.

Frequently Asked Questions

Built-in protections like Microsoft Exchange Online Protection cover baseline authentication, spam filtering, and mail routing, but they weren't built to catch novel, AI-generated phishing, business email compromise, or account takeover attempts that don't match known threat patterns. Core Email Protection adds a behavioral AI detection layer to Microsoft 365 or Google Workspace—sandboxing attachments and URLs, flagging unusual sender behavior, and applying contextual warnings—without replacing existing infrastructure or requiring a separate mail routing setup.

API-based email security connects directly to cloud email platforms such as Microsoft 365. A secure email gateway (SEG) inspects messages inline as they enter or leave an organization.

API-based security can provide fast deployment, in-mailbox visibility, post-delivery threat detection, and automated remediation without MX record changes. SEGs provide inline protection and policy enforcement before delivery.

Organizations can strengthen Microsoft 365 email security with additional protection against advanced phishing, account takeover, malicious URLs and attachments, and other threats. API-based email security can integrate directly with Microsoft 365 to protect inbound, internal, and outbound messages.

Additional layers can detect threats that bypass initial filtering, identify compromised accounts, remove malicious emails after delivery, and provide greater visibility into threats and response.

AI-powered email security detects advanced phishing and BEC by analyzing sender behavior, communication patterns, message intent, URLs, attachments, and other threat signals. This helps identify malicious emails even when they contain no known malware or known malicious URLs.

Proofpoint uses multi-model behavioral AI and threat intelligence to detect impersonation, compromised accounts, and novel attacks that rules or signature-based detection may miss.

Organizations can reduce the risk of business email compromise by combining behavioral threat detection, account protection, email authentication, and security awareness. Because BEC often relies on impersonation and social engineering, effective protection must identify unusual behavior and suspicious requests. 

Key defenses include detecting spoofed senders and domains, identifying compromised accounts, analyzing message intent, blocking credential phishing, and using email authentication such as DMARC. 

AI-generated phishing can be hard to detect because attackers can quickly create personalized messages without known malicious content or common phishing patterns. Effective email security thus needs to analyze behavior, intent, context, and known threat indicators.

Behavioral AI can analyze sender patterns, relationships, account activity, URLs, attachments, and message intent to detect new and evolving phishing attacks, including messages that have never been seen before.