[Home](https://cybersectools.com/) / [Categories](https://cybersectools.com/categories) / [Email & Messaging Security](https://cybersectools.com/categories/email-security) / Email DLP # Email DLP Solutions 2026 Email DLP solutions inspect outbound mail before it leaves your organization and stop sensitive data from reaching the wrong place, whether by accident or on purpose. They sit on the egress path and catch the everyday failure modes behind most real leaks: a misaddressed recipient, the wrong attachment, a customer list pasted into a reply, regulated data sent unencrypted. CISOs reach for this category to enforce data-handling policy at the moment a user clicks send, satisfy regulators who expect controls on data in transit, and cut the human-error incidents that dominate breach reports. It is the layer that turns "do not email PII outside the company" from a policy line into something the system enforces. 9 commercial products · [What is Email Data Loss Prevention (Email DLP)?](https://cybersectools.com/glossary/email-dlp) ## Featured on CybersecTools Paid placement: Featured vendors pay for a plan and show first. The shortlist positions are earned. [How we label paid slots](https://cybersectools.com/methodology) - [Strike48 Platform](https://www.strike48.com/platform?utm_source=cybersectools.com&utm_medium=featured) (Featured): Security Operations - [SecureIntent](https://secureintent.ai/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Data Protection - [Fortra](https://www.fortra.com/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Data Protection - [Lunar](https://lunarcyber.com/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Threat Intelligence - [Hudson Rock](https://www.hudsonrock.com/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Threat Intelligence - [Daylight Security](https://daylight.ai/?utm_source=cybersectools.com&utm_medium=featured) (Featured): Security Operations The shortlist ## [Best Email DLP Solutions for Business](https://cybersectools.com/shortlists/best-email-dlp-solutions) 1. Forcepoint DLP for Email 2. KnowBe4 Prevent 3. Trustifi Outbound Shield [and 2 more](https://cybersectools.com/shortlists/best-email-dlp-solutions) Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). Updated 2026-11-01. More Email & Messaging Security shortlists: [Best Email Security Solutions](https://cybersectools.com/shortlists/best-email-security-platforms) [Read the Email DLP shortlist](https://cybersectools.com/shortlists/best-email-dlp-solutions) ## The Email & Messaging Security market Company data as of 2026-11-05 - 105 companies sell in this market - $69M raised in 6 rounds in the last 12 months - 2 acquired in the last 12 months - 13 founded in the last two years [Explore the Email & Messaging Security market on Mandos](https://mandos.io/data/companies?utm_source=cybersectools.com&utm_medium=category&utm_campaign=email-security) ## Email DLP solutions All 9 · Free 0 · Commercial 9 1. [SendGuard for Outlook](https://cybersectools.com/tools/sendguard-for-outlook) (Email DLP): Outlook add-in for outbound email confirmation, send delay, Reply All control and DLP 2. [Messageware AttachView](https://cybersectools.com/tools/messageware-attachview) (Email DLP): OWA add-on that converts email attachments into secure HTML pages. 3. [MailGuard ImageGuard](https://cybersectools.com/tools/mailguard-imageguard) (Email DLP): Real-time illicit image detection & policy compliance for email servers. 4. [KnowBe4 Prevent](https://cybersectools.com/tools/knowbe4-prevent-intelligent-data-loss-prevention) (Email DLP): Email DLP solution using ML and behavioral AI to prevent data loss 5. [Trustifi Outbound Shield](https://cybersectools.com/tools/trustifi-outbound-shield) (Email DLP): Outbound email security with automated encryption and DLP for compliance 6. [INKY Outbound Mail Protection](https://cybersectools.com/tools/inky-outbound-mail-protection) (Email DLP): Outbound email security solution preventing data loss and insider threats 7. [VIPRE SafeSend](https://cybersectools.com/tools/vipre-safesend) (Email DLP): Outlook add-in preventing misaddressed emails & data leakage via pre-send checks 8. [MX Layer Email Data Leak Prevention](https://cybersectools.com/tools/mx-layer-email-data-leak-prevention) (Email DLP): Email DLP solution scanning inbound/outbound emails for data leak prevention 9. [Forcepoint DLP for Email](https://cybersectools.com/tools/forcepoint-email-dlp-solution) (Email DLP): DLP solution for preventing data exfiltration via outbound email channels 9 commercial products | Related: [Anti-Phishing](https://cybersectools.com/categories/anti-phishing) · [BEC Protection](https://cybersectools.com/categories/bec-protection) · [Email Encryption](https://cybersectools.com/categories/email-encryption) · [Email Security Platforms](https://cybersectools.com/categories/email-security-platforms) · [Secure Collaboration & Messaging](https://cybersectools.com/categories/secure-collaboration-messaging) ## How to choose Email DLP solutions - Look at how it handles misdirected email specifically: recipient anomaly detection, external-domain warnings, and a hold-and-confirm step are what prevent the wrong-recipient mistakes behind most accidental leaks. - Test the detection engine against your actual data, not the demo dataset. Pattern matching catches credit cards and national IDs, but see how it handles your contract templates, source code, and free-text PII before trusting the false-positive numbers. - Decide whether you need true inline blocking or only monitoring and coaching. Real-time prevention stops the leak but adds friction and help-desk load; monitor-and-alert is lighter but lets data leave first. - Check where it enforces. Some solutions live inside the Microsoft 365 or Google Workspace mail flow, others sit as a gateway in front of it, and that choice drives latency, deployment effort, and how cleanly it coexists with your existing secure email gateway. - Weigh the encryption and remediation paths. When a message trips a rule, can the solution encrypt it, quarantine it, strip the attachment, or route it for approval, rather than just bouncing it and frustrating the sender. - Scrutinize the admin and audit experience: policy authoring without regex gymnastics, incident triage that does not bury analysts, and exportable logs that hold up as GDPR, HIPAA, or PCI evidence. ## Articles about Email DLP Shortlists, buying guides and market analysis from our resource library. - [Best Email DLP Solutions for Business](https://cybersectools.com/shortlists/best-email-dlp-solutions): Compare 5 email DLP solutions, like Forcepoint, KnowBe4 Prevent and Trustifi, on misdirected email, sensitive data detection, encryption and approval flows. ## Email DLP Solutions FAQ Common questions about Email DLP solutions: how to choose, pricing and comparisons. ### What is Email DLP? Email DLP is a set of controls that inspect outbound email and prevent sensitive data from leaving your organization improperly. The solutions scan message bodies, recipients, and attachments against your data-handling policy, then block, quarantine, encrypt, or warn the sender when something crosses a line. It is the enforcement layer for rules like keeping regulated data and customer lists away from external or wrong recipients. ### How is Email DLP different from a secure email gateway? A secure email gateway mostly defends against inbound threats: phishing, malware, and spam aimed at your users. Email DLP runs the other direction, watching outbound mail to stop your own data from leaking out. They complement each other, and many organizations run both. Some gateways bundle DLP features, but dedicated Email DLP usually handles misdirected-recipient detection and policy nuance more thoroughly. ### How do I choose an Email DLP solution? Start with your top risk. If accidental wrong-recipient sends dominate your incidents, prioritize recipient anomaly detection and confirmation prompts. If regulated data is the concern, weight detection accuracy and encryption. Then match the deployment model to your mail platform, test the false-positive rate on your real content, and confirm the audit trail satisfies your compliance obligations before committing. ### Can Microsoft 365 or Google Workspace native DLP replace a dedicated solution? For organizations with straightforward needs and a single mail platform, native DLP covers the basics at no extra cost. Dedicated solutions usually pull ahead on misdirected-email detection, in-the-moment user coaching, cross-platform coverage, lower false positives, and richer policy and reporting. The buy-versus-native call comes down to your incident profile and how much tuning effort your team can spend. ### Does Email DLP stop malicious insiders or only honest mistakes? It addresses both, but they are different problems. Most of the value comes from catching honest mistakes, since wrong-recipient and wrong-attachment errors cause the bulk of email leaks. Against a determined insider who knows the rules, DLP raises the bar and creates an audit trail but is not foolproof, since data can be reworded, encrypted, or moved through other channels. Treat it as one layer of a broader insider-risk program. --- Source: https://cybersectools.com/categories/email-dlp For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on the Email DLP vendors: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=category-md