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Core Email Protection
Stop 99.999% of Email Security Threats
Deploy industry-leading email protection via API or secure email gateway (SEG).
Redefining email security with a unified SEG and API protection framework
Read the announcement from RSA 2026.
Completely neutralize advanced threats
Stop the broadest range of email cyberattacks with Core Email Protection, delivering industry-leading AI for threat identification and classification in Microsoft 365 and Google environments.
Block BEC, ransomware, phishing, account takeovers—and whatever comes next—with powerful AI.
See where threats come from, what they hit, and what stays safe with interactive maps powered by deep threat intelligence.
Integrate with Microsoft Graph API for rapid deployment, with automated learning, to protect your environment in just days.
Email remains the most targeted, most costly, and most critical attack vector
Email-based attacks give cybercriminals a direct path to your employees and sensitive data. Phishing is the most common cyberattack worldwide, and the average cost of a data breach is now roughly US$4.8 million (IBM).
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.
AI Powered by 2.8 Million Customers
Leverage protection built on advanced language models, relationship graphs, machine learning, computer vision, and unrivaled threat intelligence.
Threat Protection Workbench
Accelerate SOC response with deep detection insights, attack forensics, and seamless integrations.
Threat Interaction Map
Quickly identify critical incidents using an intuitive, visualized map for events across multiple control points.
Flexible Deployment via API or SEG
Match your deployment to your business priorities: get comprehensive protection and customization via SEG, or deploy via API for rapid, low-touch rollout.
Intuitive End User Experience
Provide users with real-time coaching for suspicious mail, with behavioral learning for spam and graymail.
Agentic Automation
Automate review for thousands of user-reported emails via Satori Abuse Mailbox Agent.
Unify protection for SEG, API, and M365 deployments
Get coordinated visibility and shared detection intelligence across the entire email threat lifecycle with a streamlined investigation experience purpose-built for SOC teams.
Unified Protection & Visibility with M365: Secure M365 via API while enabling SOC analysts to view and respond to Proofpoint detections in their M365 console.
Visibility Across SEG & API: Unify visibility across secure email gateway and API deployments while protecting against internal mail and direct send vulnerabilities.
Top industry analysts recognize Proofpoint as a leader in email security
A Leader in the 2025 Gartner® Magic Quadrant™ for Email Security
Proofpoint named a Leader in The Forrester Wave™: Email, Messaging, and Collaboration Security Solutions report, Q2 2025
Proofpoint vs. competing email protection
| Capability | Proofpoint Core Email Protection | Competing Email Protection |
|---|---|---|
| Anomaly analysis |
Yes
|
Yes
|
| Behavioral analysis |
Yes
|
Yes
|
| 2.1 million customer AI training dataset |
Yes
|
No
|
| Sandboxing for malicious URLs and attachments |
Yes
|
No
|
| Lookalike domain analysis |
Yes
|
No
|
| Computer vision technology |
Yes
|
No
|
| Integrated outbound protections |
Yes
|
No
|
Explore related resources
Future-proof with Collaboration Security Prime
Protect trusted interactions and stop AI-scaled attacks beyond the inbox. Proofpoint Collaboration Security Prime extends the powerful protection of our industry-leading email security to messaging and collaboration tools, cloud apps, and the supply chain—all through one integrated platform.
FAQ
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What is post-delivery detection, and how does it protect against malicious content in emails?
Post‑delivery detection is a security method that identifies and removes harmful emails after they reach inboxes, protecting against threats that evolve or trigger later. It rescans delivered messages with updated threat intelligence, behavioral analytics, and machine‑learning models to catch attacks missed at first pass.Post‑delivery detection is a security method that identifies and removes harmful emails after they reach inboxes, protecting against threats that evolve or trigger later. It rescans delivered messages with updated threat intelligence, behavioral analytics, and machine‑learning models to catch attacks missed at first pass.
Key protections include:
- Ongoing message review: Emails are checked again for new indicators of compromise, unusual behavior, or delayed‑detonation payloads.
- Automated quarantine: Once confirmed malicious, the message is pulled from all inboxes, including forwarded copies.
- Behavioral anomaly detection: Internal messages showing abnormal patterns are flagged to identify possible account takeover.
This layered approach shields users from hidden, evolving, or time‑released threats that bypass initial filtering.
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Should my organization use API-based email security or a secure email gateway?
Whether to choose API‑based email security or a secure email gateway (SEG) depends on deployment speed, configuration needs, and the structure of your environment. API‑based security integrates quickly with cloud suites, while SEGs offer deeper pre‑delivery control.Whether to choose API‑based email security or a secure email gateway (SEG) depends on deployment speed, configuration needs, and the structure of your environment. API‑based security integrates quickly with cloud suites, while SEGs offer deeper pre‑delivery control.
Choose API-based security if you want:
- Rapid deployment without MX changes
- Tight integration with Microsoft 365 or Google Workspace
- Strong post‑delivery detection and automated remediation
- Low maintenance requirements
Choose a secure email gateway if you need:
- Fine‑tuned pre‑delivery filtering and routing control
- Rich DLP and policy customization
- Additional support for hybrid or complex email systems
Many organizations adopt a hybrid model, combining API‑based post‑delivery coverage with SEG pre‑delivery defenses.
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How can Proofpoint help my organization defend against AI-augmented email threats?
Proofpoint protects against AI‑augmented email threats by combining machine learning, behavioral analytics, and visual inspection to detect malicious intent across the full attack chain. It evaluates language cues, sender behavior, payload content, and hidden prompts to uncover threats that bypass traditional defenses.Proofpoint protects against AI‑augmented email threats by combining machine learning, behavioral analytics, and visual inspection to detect malicious intent across the full attack chain. It evaluates language cues, sender behavior, payload content, and hidden prompts to uncover threats that bypass traditional defenses.
Key protections include:
- AI/ML intent analysis: Identifies urgency tactics, manipulation, and impersonation signals common in AI‑generated phishing emails.
- Behavioral anomaly detection: Flags changes in communication style linked to account compromise or synthetic identities.
- Visual and payload scanning: Analyzes images, QR codes, and email attachments for obfuscation or AI‑created artifacts.
- Prompt injection defense: Detects hidden prompts meant to influence connected AI assistants or workflows.
- Large‑scale threat intelligence: Uses insights from trillions of emails to track new AI‑driven attack patterns.
This multi‑layered system blocks phishing, BEC, malware, and advanced AI‑scaled threats before users interact.
