EMAIL DATA LOSS PREVENTION

Stop Email Data Loss with Behavioural AI

Stop email exfiltration and misdirected emails with behavioural email DLP that detects risky communications.

Two business professionals reviewing information together on a laptop.
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Behaviour-Based Protection

Stop sensitive data from leaving through email

Human error, risky sharing, and insider threats make email a leading source of data loss. As AI assistants and autonomous agents amplify these risks, modern email data loss prevention must understand behaviour, recipient relationships, and context to stop misdirected emails, misattached files, and data exfiltration without disrupting productivity.

Stop mistakes before they become incidents

Warn users when emails, attachments, or recipients look risky so they can correct errors and prevent data loss.

Catch email data loss that rules miss

Identify unusual behaviour, suspicious recipients, and insider-driven exfiltration that static policies overlook.

Deploy fast with minimal upkeep

Roll out in as little as 48 hours, without complex setup or ongoing policy maintenance required.

Incident Detection Challenges

Most email data loss looks like normal business

Data loss in email often starts with simple mistakes: choosing the wrong recipient, attaching the wrong file, or sending sensitive data to an unusual recipient. These messages often look legitimate, making them difficult for rule-based tools to detect.

Organisations with 5,000 or more inboxes can expect thousands of misdirected emails and hundreds of exfiltration attempts each year. Every incident costs time, money, and—in regulated industries—increases the risk of fines and lost trust.

85 %

of organisations experienced data loss in the past year

76 %

of data loss events stem from just 1% of users

33 %

of employees send 1 or 2 misdirected emails per year

Instant Preventive Action

Detect risky email behaviour before data loss occurs

Proofpoint Adaptive Email DLP draws on more than 12 months of email data to learn each user's normal email behaviour. Every outbound email is scored in real time based on recipients, relationships, attachments, sending patterns, and other contextual signals. When Adaptive Email DLP detects risky activity, it can issue in-the-moment warnings, block messages, or alert security teams to investigate.

Features

Relationship Intelligence

Detect subtle changes in communication patterns and messages sent outside normal business relationships.

Real-Time Risk Analysis

Score outbound emails in real time based on recipients, relationships, attachments, domains, and message context.

In-the-Moment User Warnings

Warn users when messages appear risky so they can correct mistakes before sensitive data is lost.

Contextual Blocking and Alerts

Block high-risk messages or alert security teams with the context needed for fast investigation.

Fast Deployment

Deploy through Microsoft 365 APIs and start detecting anomalies in as little as 48 hours, with no rules to write or maintain.

Cloud Account Activity Monitoring

Continuously analyse activity across Microsoft 365, Google Workspace, and Okta using API-based integrations for full visibility.

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Two colleagues discussing their work together at a laptop in a meeting room.

Behavioural Detection and Investigations

Prevent misdirected emails, wrong files, and insider exfiltration

Stop the most common forms of email data loss, including misdirected emails, wrong-file attachments, insider exfiltration, and accidental exposure to external parties. In-the-moment warnings automatically flag users when risky behaviour is detected and help them make informed decisions, reinforcing policies and preventing data loss.

Features

Misdirected Email Prevention

Detect unusual recipients, groups, and domains before messages containing sensitive information are sent.

Wrong-File Protection

Flag attachments that do not match the user's normal sharing patterns or intended recipients.

Insider Exfiltration Detection

Detect suspicious attempts to send sensitive data to personal accounts or unauthorised recipients.

Microsoft 365 Email Protection

Protect Microsoft 365 email workflows with controls that adapt as communication patterns change over time.

Investigation Context

Give security teams the behavioural context behind alerts so they can investigate and respond faster.

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Why Proofpoint

Adaptive Email DLP vs. rule-based email DLP

Use CaseRule-Based Email DLPProofpoint Adaptive Email DLP
Behavioural analysis Relies on predefined rules and known content patterns Learns normal communication patterns to identify risky email behaviour
Misdirected emails Does not support creation of rules to identify recipient mistakes Detects unusual recipients before messages are sent
Wrong attachments Cannot determine whether the right file is being shared Flags attachments that do not match normal sharing behaviour
Insider exfiltration Detects only predefined content that matches policies Detects suspicious sharing to personal or unauthorised accounts
User guidance Typically acts after policies are triggered Warns users in the moment so they can correct mistakes
Adaptive protection Requires ongoing policy updates and maintenance Continuously learns as communication patterns evolve
Investigation context Limited context beyond policy violations Provides behavioural context behind alerts for faster investigations

Part of the Proofpoint Data Security platform

Adaptive Email DLP works alongside Enterprise DLP, Insider Threat Management, and DSPM to protect data across email, cloud, endpoints, and the web.

Request a Demo

Stop email data loss before messages leave your organisation with the power of behavioural AI. Request a demo to see it in action.

Frequently Asked Questions

Email data loss prevention (DLP) helps organisations prevent sensitive data from being exposed through email. Modern email security solutions can detect risky recipients, suspicious attachments, and unusual file sharing before data is exposed. AI-powered email DLP improves data protection by analysing communication patterns and stopping risky emails before sensitive information leaves the organisation.

Many email data loss incidents look like normal business activity. Employees may choose the wrong recipient, attach the wrong file, or send sensitive data to someone they did not intend to contact. Because these messages often appear legitimate, rule-based tools can miss suspicious email activity and other risky behaviour.

Behavioural AI-powered email DLP helps prevent sensitive data from leaving the organisation by analysing recipients, attachments, message context, and sending behaviour in real time. When behavioural AI-powered email DLP detects suspicious email activity, it warns users before they make mistakes and can block high-risk messages before data is exposed.

Organisations can reduce misdirected emails in Microsoft 365 by detecting unusual recipients, risky attachments, and abnormal sending behaviour before messages are delivered. Behavioural AI-powered email DLP can analyse the type of email being sent, who it is being sent to, and whether the activity matches normal communication patterns. Real-time warnings help users correct mistakes before sensitive data reaches the wrong recipient.

Yes. Adaptive Email DLP can help prevent insider-driven data breaches by detecting risky file sharing, unusual recipient activity, and attempts to send sensitive data outside the organisation. This may include intellectual property, financial records, customer data, and other sensitive information. Behavioural analysis also helps support regulatory compliance and broader data protection efforts.

Organisations should look for email DLP solutions that go beyond content scanning and static rules. Effective behavioural AI-based email DLP should provide behaviour-based analysis, real-time user warnings, fast Microsoft 365 deployment, and clear investigation context for security teams. Behavioural AI-powered email data security can improve data protection while reducing the risk of false positives, manual policy management, and business disruption.