What It Is
E5 Capability Enablement is the work of systematically activating the security, compliance, and analytics capabilities included in Microsoft 365 E5 licensing that organizations have paid for but not yet deployed. This is not a product. It is a practice. An E5 license includes Defender for Office 365 Plan 2, Defender for Endpoint Plan 2, Entra ID P2 (which enables PIM, Identity Protection, and Identity Governance), Microsoft Purview compliance tools, Microsoft Sentinel data connectors, and more. The gap between what is licensed and what is active is consistently large in practice.
Why It Matters
E5 licensing is a significant investment, typically $57 per user per month or more. Organizations that hold E5 licenses and rely on third-party tools for email security, identity governance, or compliance management are paying twice for the same capability. The most direct ROI in a Microsoft environment is often not purchasing new tooling. It is activating what the existing license already includes. I have replaced third-party tools with native E5 capabilities in multiple engagements, eliminating licensing cost while maintaining or improving protection quality.
What E5 Includes
- Defender for Office 365 Plan 2 - Advanced anti-phishing, safe links, safe attachments, attack simulation training, threat investigation
- Defender for Endpoint Plan 2 - EDR, vulnerability management, automated investigation and response
- Entra ID P2 - PIM, Identity Protection, Identity Governance, access reviews
- Microsoft Purview (E5 Compliance) - eDiscovery Premium, Insider Risk Management, Communication Compliance, advanced retention
- Microsoft Sentinel - Included data connectors for M365 and Entra ID
- Power BI Pro - Included with E5 for analytics and reporting workloads
In Practice
The clearest example is the Mimecast replacement at Latham Pool Products. The organization was paying for Mimecast while simultaneously holding an E5 license that already included Defender for Office 365 Plan 2. I designed and executed the migration to the native capability, eliminating the third-party cost entirely. Across the NBT portfolio, identifying and activating underused E5 capabilities was a recurring pattern: organizations paying for E5 and using E3.
The clearest example of E5 enablement work in my career is the Mimecast replacement at Latham Pool Products. The organization was paying for Mimecast as a secure email gateway while simultaneously holding an M365 E5 license that included Defender for Office 365 Plan 2, which covered the same function. I designed and executed the migration from Mimecast to Defender for Office 365, activating the native capability and eliminating the third-party licensing cost entirely. The protection quality was equivalent; the cost was zero once the E5 license was already in place.
Across the NBT client portfolio, E5 license utilization analysis was a consistent part of the architecture review work I did. The pattern was predictable: organizations had been assigned E5 licenses, often as part of a volume agreement negotiation, without a corresponding plan to activate the capabilities those licenses included. Defender was partially deployed. PIM was not deployed. Purview compliance tools were untouched. The analysis work was identifying the gap between what was licensed and what was active, then prioritizing activation by risk reduction value and displacement of existing third-party spend.
E5 enablement work is not only about security capabilities. The analytics and productivity layer, covering Power BI Pro, advanced Teams features, and the full Viva suite, is also frequently underutilized. License utilization reviews I have conducted have identified six-figure annual savings opportunities across multiple clients, through a combination of tool consolidation, license right-sizing, and elimination of redundant spend on capabilities already included in the existing license tier.
- Mimecast replacement with native E5 capabilities - Replaced Mimecast secure email gateway at Latham Pool Products with Defender for Office 365 Plan 2 - activating anti-phishing, safe links, safe attachments, and email threat investigation capabilities already included in the E5 license. Eliminated the Mimecast licensing cost while maintaining email protection quality.
- E5 utilization analysis across MSP client portfolio - Conducted systematic E5 license utilization reviews across NBT client tenants, identifying capabilities paid for but not activated, redundant third-party tools displaceable by native E5 capabilities, and mis-assigned license tiers consuming unnecessary spend.
- Entra ID P2 activation program - Activated Entra ID P2 capabilities included in E5 licensing across client tenants - PIM for privileged access management, Identity Protection for risk-based Conditional Access, and Identity Governance for access review workflows.
- Purview compliance tool activation - Identified and activated Purview E5 Compliance capabilities across client environments, including sensitivity labeling, retention policies, and where applicable, eDiscovery Premium and Insider Risk Management.
- License optimization and cost recovery - Identified license optimization opportunities including right-sizing from E5 to E3 for users whose role did not require E5 capabilities, consolidation of redundant third-party tools, and elimination of unused add-on licenses - recovering meaningful annual spend in multiple engagements.
- Copilot for M365 readiness assessment - Conducted data readiness assessments for organizations considering Copilot for M365 deployment - evaluating SharePoint permissions, sensitivity label coverage, and data oversharing posture before enabling the capability.