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Egress Prevent

#19 of 26 in Data Loss Prevention SoftwareData Loss Protection Software

Egress Prevent: A focused Microsoft 365 email DLP tool for preventing misdirected messages and exfiltration. Ranked #19 of 26 in Data Loss Prevention Software by our editors (7.5/10); pricing: Paid; best for microsoft 365 email DLP.

7.5/10Editor score
Egress Prevent7.5 Visit Egress Prevent

At a glance

  • Editor score
    7.5 / 10
  • Pricing
    Paid
  • Best for
    Microsoft 365 email DLP
  • Free plan
    No
  • Paid from
    $4.58/seat/mo
  • Deployment
    Cloud
  • Founded
    2010 · Clearwater, Florida, United States
  • Facts checked
    20 Sep 2026
Egress Prevent screenshot
  • Where it wins

    • Detects misdirected recipients and suspicious data movement
    • Provides real-time nudges before users send email
    • Includes investigation, analytics, and audit visibility
  • Where it doesn't

    • Focuses primarily on outbound email rather than full-channel DLP
    • No free plan is available
    • Advanced controls center on Microsoft 365 and Purview

Our verdict on Egress Prevent

Egress Prevent, now offered as KnowBe4 Prevent, is a cloud-deployed outbound email security and data loss prevention product for organizations using Microsoft 365. It analyzes sender behavior, recipients, message content, and historical communication patterns to identify accidental misdelivery, suspicious data movement, and potential exfiltration. Its audience is teams that want to reduce human-error-driven email exposure while giving administrators tools for policy management, investigation, and oversight.

Pricing is listed per seat per month with monthly billing. The published plans show Prevent at $4.58, $6.25, $7.92, or $9.58, and Prevent Enterprise at $6.25, $8.33, $10.42, or $12.92. Prevent includes misdirected email prevention, data exfiltration prevention, Microsoft 365 integration, and detailed analytics. Prevent Enterprise adds custom DLP policies, misdirected content detection, and Microsoft Azure Information Protection (Purview) integration. The listed starting price is $4.58 per seat per month, with North America list pricing dated July 2025.

Its strongest fit is email-focused protection: contextual DLP and NLP analysis, recipient detection, historical communication baselines, and real-time user nudges work together before a message is sent. Administrators also get email event search, investigation tools, dashboards, and audit visibility. Microsoft 365 email gateway integration and support for web, iOS, and Android broaden access around the email workflow. Choose Prevent when outbound email is the central loss channel and Microsoft 365 is already part of the environment. Organizations seeking broader protection across many channels may prefer a wider DLP suite.

Your product? Our editors can test Egress Prevent in depth and publish a review, labelled as paid · from $149/mo →

Egress Prevent pricing

Plans Paid No free plan — trial or paid only. Prices checked 20 Sep 2026.
See plans on knowbe4.com

All 2 Egress Prevent plans and prices →

Egress Prevent fact sheet

Free planNo
Paid from$4.58/seat/mo
DeploymentCloud
Endpoint controlsNot verified
Network controlsNot verified
Cloud app controlsNot verified
Data discoveryYes
Removable media controlNot verified
Incident workflowsYes
DeploymentCloud
PlatformsWeb, iOS, Android
Compliance & securityGDPR
SupportDocs
Built forMid-market, Enterprise (editorial estimate)
Integrations2 integrations: Microsoft 365, Microsoft Azure Information Protection (Purview)
PricingPaid (source)
Websiteknowbe4.com
Facts checked20 Sep 2026

Egress Prevent integrations

Egress Prevent lists 2 integrations on its own site.

  • Microsoft 365
  • Microsoft Azure Information Protection (Purview)

Alternatives to Egress Prevent

See all Egress Prevent alternatives →

Also Ranked In

Egress Prevent is ranked in 2 of our directories.

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Featured on iTechGuides

Featured on iTechGuides — Egress Prevent 7.5/10

Egress Prevent is listed in our Data Loss Prevention Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

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