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Data Loss
Prevention

Stop data loss over email while avoiding business disruption. Transparent detection logic and agentic AI identify, investigate, and block violations before delivery.

Data loss events can look just like legitimate email

Exposure can happen accidentally, intentionally, or through a compromised account.

Accidental sends

An employee attaches the wrong file or picks the wrong recipient, and customer data is gone before anyone notices.

Departing employees

Someone on their way out forwards contracts, pipeline, or source material to a personal account.

Compromised accounts

An attacker with a valid session exports customer records to a domain nobody recognizes, using a trusted internal sender.

Stop sensitive data loss without slowing down the business

Transparent, adjustable detection logic identifies potential violations. Sublime’s Autonomous Security Analyst (ASA) investigates each one in context and blocks confirmed violations before delivery.

Prevent sensitive data loss

Built-in detections cover personal, payment, health, and credential data from day one. Tailor them to your roadmaps, contracts, and code.

Avoid business disruption

Transparent, adjustable detection logic and agentic investigation gives teams the confidence to block sensitive data and keep legitimate email flowing.

Simplify email security operations

Manage inbound and outbound email protection in one platform, with one detection engine and one console.

How Sublime Email DLP works

Tailored detections flag potential violations. ASA reviews each one before anything is blocked.

Autonomous review

ASA investigates flagged messages like your best analyst, explains its verdict, and automatically remediates violations according to your preferences.

Policy enforcement

Block or alert on outbound messages that violate your policies.

Contextual analysis

Natural language understanding analyzes message context and intent, while entity recognition identifies sensitive data such as SSNs, account numbers, and credentials.

Deep file inspection

Recursive analysis unpacks nested and embedded files, then OCR and computer vision scan images and documents for sensitive data.

Sublime's Email DLP lets us tailor detections to our own risk areas, instead of waiting on a vendor to respond. Knowing exactly why something gets flagged gives us the confidence to keep closing gaps as new risks come up.
Senthil Kumar Iyyappan (SKI)
CISO & Head of IT, Ocrolus

Ready to stop sensitive data loss over email?

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What our customers are saying

The black box approach to email security no longer works. 
It reduces visibility on how 
Brex may be attacked and 
the tactics and techniques 
used by attackers. 



With Sublime, we now have transparency and the confidence to keep up with emerging threats.

Alex Carter

Mark Hillick

CISO, Brex

The ability to automate remediations with high confidence and minimize manual reviews unlocks a new level of efficiency in our SOC. It’s hard to imagine going back to life before Sublime.

JJ Agha

JJ Agha

CISO, Fanduel

What I love about the platform is that it just works. I’m so tired of all these tools I have to futz with, and Sublime is just easy.

Jason Kikta

Jason Kikta

CISO, Automox

With Sublime, we no longer wait weeks for vendor updates. Our team reacts instantly - which is critical for our fast-moving environment.

Ronald Richards

OVO Energy

Frequently asked questions

What is data loss prevention software and how does it protect email?

Data loss prevention software monitors outbound communications to detect and prevent unauthorized sharing of sensitive data. It scans emails for patterns, keywords, and attachments that indicate potential data leaks or policy violations. Sublime analyzes the full message and its attachments before delivery, and ASA (Autonomous Security Analyst) investigates every flagged message and blocks the violations.

How is Sublime Email DLP different from traditional DLP?

Traditional DLP relies on fixed rules and hides the logic behind its decisions, so teams get alerts without context. Sublime combines transparent, adjustable detection logic with ASA, its Autonomous Security Analyst, to investigate flagged messages and automatically block violations or release legitimate email. This helps teams enforce policy with fewer false positives and less manual work. In addition, both inbound and outbound email run on the same detection engine in the same platform, reducing admin overhead.

Can data loss prevention software prevent both accidental and intentional data leaks?

Yes. Data loss prevention software evaluates message content and recipients in context before delivery to stop both. With Sublime, ASA (Autonomous Security Analyst) investigates each flagged message and automatically blocks violations or releases legitimate email based on its verdict, so a bulk export to a personal address never goes out and a legitimate contract still reaches the customer.

How does email data loss prevention software detect sensitive information?

Email data loss prevention software uses pattern recognition, natural language processing, and machine learning to identify sensitive data like Social Security numbers, financial information, and confidential documents in both message content and attachments. Sublime’s detection logic is transparent and adjustable, so teams can understand why a message was flagged and tune their policies.

What types of data can email data loss prevention software protect?

Email data loss prevention software can protect personally identifiable information (PII), financial data, intellectual property, healthcare records, legal documents, and custom data types defined by organizational policies. Sublime provides a maintained feed of DLP detections, including coverage for personal, healthcare, credential, and country-specific data, that teams can tailor to their risks as well as add their own.

How does data loss prevention software handle compliance requirements?

Data loss prevention software generates detailed audit logs, compliance reports, and policy violation alerts. It helps organizations support regulatory requirements such as GDPR, HIPAA, and PCI DSS through automated monitoring and reporting. Sublime also provides transparent detections and brings inbound and outbound email protection into the same platform

How does Sublime Email DLP work with Microsoft Purview?

Microsoft Purview classifies and labels sensitive data across Microsoft 365. Sublime reads Purview sensitivity labels carried on the message and enforces on them before delivery, so a message labeled confidential is blocked when it's sent to a personal address. Teams can keep Purview for classification and use Sublime for email enforcement.

Now is the time

See how Sublime delivers autonomous protection by default, with control on demand.