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Security & Privacy / Email Security Software

Microsoft Defender for Office 365 Review, Pricing, Pros & Cons

Microsoft Defender for Office 365 adds advanced email and collaboration protection to Microsoft 365 cloud mailboxes. Plan 1 focuses on prevention, detection, and real-time reporting; Plan 2 adds Threat Explorer, campaigns, automated investigation and response, attack simulation training, and Microsoft Defender XDR capabilities.

Research by Global Tool Radar Research SystemEvidence checked: Aug 12, 2026AI-assisted · No Global Tool Radar hands-on testView research methodology
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Buying snapshot

Quick buying snapshot

A compact view of who this tool fits, what it costs, and what to confirm before choosing it.

Best for
  • Email and collaboration already run in Microsoft 365: Defender for Office 365 applies native policies and investigations across cloud mailboxes, Outlook, Teams, SharePoint, and OneDrive without introducing a separate user-facing mail platform.
  • The organization wants to consolidate email security and Microsoft SecOps workflows: Plan 2 connects email incidents, advanced hunting, campaigns, automated response, and Defender XDR context in the Microsoft Defender portal.
More buying conditions
  • Security awareness training should use Microsoft threat signals: Plan 2 includes attack simulation training with phishing simulations and targeted education; Plan 1 does not.
Not for
  • Primary mailboxes are outside Microsoft 365: The target is designed around Microsoft 365 cloud mailboxes and collaboration services; evaluation behind another gateway still requires Microsoft 365 cloud mailboxes.
  • The purchase must include DLP, compliance, SIEM, or human-managed response: Microsoft Purview, Microsoft Sentinel, and Defender Experts MDR are separate products or services and should be budgeted independently.
More buying conditions
  • A buyer requires a publicly guaranteed minimum contract, mailbox minimum, or full deployment cost: The public exact-plan page establishes rates, annual payment, and auto-renewal but not a minimum commitment, minimum quantity, implementation fee, or complete services cost.
Pricing
  • Two per-user paid editions with public US monthly rates, yearly payment, and an annual commitment. Plan 1 is the prevention and detection tier; Plan 2 is the advanced hunting, automation, training, and XDR tier. Eligible Microsoft suites can provide the same plan rights through broader bundle subscriptions.
  • Microsoft Defender for Office 365 Plan 1 · $2.00 USD · per user · per month · billed annually · one-year commitment
Free or trial access
  • No permanent free Defender for Office 365 plan. Eligible existing Microsoft 365 customers can receive automatically provisioned Plan 2 trial licenses for 90 days. Trials and evaluations are unavailable to U.S. Government and Microsoft 365 Education organizations; existing Plan 2 organizations use an unlimited audit-mode evaluation rather than a trial entitlement.

Product scope

Product functionality and purchase scope

This profile evaluates the current Microsoft Defender for Office 365 Plan 1 and Plan 2 subscriptions. It includes Microsoft 365 email and collaboration threat protection assigned to those editions and keeps baseline Exchange Online Protection, broader suites, Defender XDR platform scope, add-ons, trials, and managed services outside the core plan ladder.

Product checked: Aug 12, 2026

Functionality reviewed
  • Microsoft Defender for Office 365 Plan 1 prevention, detection, alerts, real-time detections, Safe Links, Safe Attachments, advanced anti-phishing, and Teams, SharePoint, and OneDrive protection
  • Microsoft Defender for Office 365 Plan 2 inheritance of Plan 1 plus Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, attack simulation training, and XDR incident correlation
  • Built-in protection for Microsoft 365 cloud mailboxes only as the baseline inherited beneath Defender for Office 365
  • Standalone or add-on subscription licensing for the same exact Plan 1 and Plan 2 entitlements
  • Policy scoping to licensed users, groups, email domains, shared mailboxes, and covered collaboration users
Non-target functionality excluded from scoring
  • Exchange Online Protection or built-in security for cloud mailboxes as a separate core plan
  • Office 365 E3/E5, Microsoft 365 E3/E5, Microsoft Defender Suite, and other Microsoft 365 bundles as duplicate target plans
  • Microsoft Defender XDR products for endpoints, identities, SaaS apps, and clouds beyond the Plan 2 email integration and cross-domain capabilities
  • Safe Documents protected-view scanning as a confirmed standalone Plan 2 entitlement while current Microsoft sources conflict
  • Microsoft Purview data loss prevention, compliance, eDiscovery, retention, and information protection
  • Microsoft Sentinel licensing, ingestion, analytics, retention, and SIEM operations
  • Microsoft Defender Experts MDR and other managed or professional security services
  • Time-limited trials, evaluations, demos, contact-sales actions, and buy-now actions as plans
  • Consumer Microsoft Defender, Outlook.com, Microsoft 365 Personal, and Microsoft 365 Family security
Purchase paths

Pricing checked: Aug 12, 2026

  • Office 365 E3: Office 365 E3 includes Defender for Office 365 Plan 1 capabilities from July 1, 2026. It remains a broader suite path rather than a third target plan.
  • Microsoft 365 E3: Microsoft 365 E3 includes Defender for Office 365 Plan 1 capabilities from July 1, 2026. It remains a broader suite path rather than a duplicate target plan.
  • Office 365 E5: Office 365 E5 is a broader productivity and security subscription that provides user rights for Defender for Office 365 Plan 2. It is not a third Defender for Office 365 plan, and no Office 365 E5 bundle price is carried into this profile.
  • Microsoft 365 E5: Microsoft 365 E5 is a broader suite that provides Defender for Office 365 Plan 2 rights and can add entitlements, such as Safe Documents, that are not established for the standalone Defender plans.
  • Microsoft Defender Suite: Microsoft Defender Suite is a broader security bundle that supplies email and collaboration security alongside endpoint, identity, SaaS, and XDR protection. Its bundle price and prerequisites are not Defender for Office 365 plan offers.

Pricing plans

Microsoft Defender for Office 365 pricing table

Pricing checked: Aug 12, 2026

Official factConfidence 99%1 linked source

The exact target has two current core offers: Plan 1 at USD 2.00 per user/month and Plan 2 at USD 5.00 per user/month on the US page, both paid yearly with an annual commitment. Microsoft requires licenses for benefiting users and shared mailboxes and for users covered by collaboration protections. Eligible Office 365 and Microsoft 365 E3 subscriptions include Plan 1 from July 1, 2026; eligible E5 subscriptions and Microsoft Defender Suite provide broader inclusion routes. No public minimum quantity, usage charge, implementation amount, or standalone services fee is retained.

Official pricing page
Commercial scope needs confirmation

Current official sources describe an offer or purchase route differently. The page remains usable, but affected price schema is withheld until the scope is resolved.

  • The current Plan 2 product card advertises support for opening documents in protected view, while the current feature service description says Safe Documents is available only with Microsoft 365 E5 or Microsoft Defender Suite and is not included in Defender for Office 365 plans. Protected-view scanning is therefore not treated as a confirmed standalone Plan 2 entitlement.
PlanPriceBest for
Microsoft Defender for Office 365 Plan 1Microsoft Defender for Office 365 Plan 1 standalone or add-on subscription
  • $2.00 USD · per user · per month · billed annually · one-year commitment
Microsoft 365 organizations that need native advanced phishing, impersonation, malicious-link, attachment, QR-code, and collaboration protection with real-time detection and reporting.
Microsoft Defender for Office 365 Plan 2Microsoft Defender for Office 365 Plan 2 standalone or add-on subscription
  • $5.00 USD · per user · per month · billed annually · one-year commitment
Security operations teams that need Plan 1 protection plus advanced hunting, campaign analysis, automated investigation and response, phishing simulation, and cross-domain incident correlation.

Plan upgrade triggers

Verified plan boundaries that can change the required edition.

Microsoft Defender for Office 365 Plan 1 Microsoft Defender for Office 365 Plan 2

The security team needs Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, attack simulation training, priority-account protection, or Microsoft Defender XDR incident correlation rather than Plan 1 real-time detections alone.

Supporting pricing evidence
License calculator

License cost scenarios

Adjust the license quantity to compare public recurring rates across the available plans.

PlanPriceMonthly equivalent12-month license-rate estimateStated-term license cost
Microsoft Defender for Office 365 Plan 1billed annually · one-year commitment$2.00 USD / user / month$10.00 USD$120.00 USD$120.00 USDCalculated from the structured public rate and stated commitment term

License-rate calculation only. It excludes implementation, migration, training, support, taxes, add-ons, usage charges, and negotiated discounts unless they are explicitly included in the displayed public rate.

What is included, connected, or sold separately

Product scope

What is included, connected, or sold separately

Material capabilities are separated by their verified relationship to the target product.

QR-code and language-model phishing detectionIncluded capability

The current Plan 1 card explicitly includes QR-code and language-model protections; Plan 2 includes everything in Plan 1.

Plan: Microsoft Defender for Office 365 Plan 1: Included · Microsoft Defender for Office 365 Plan 2: Included
Official source
Safe Links, Safe Attachments, and impersonation protectionIncluded capability

Plan 2 includes Plan 1. Protection spans email plus supported Teams, SharePoint, OneDrive, and Office client workflows.

Plan: Microsoft Defender for Office 365 Plan 1: Included · Microsoft Defender for Office 365 Plan 2: Included
Official source
Microsoft Sentinel incident and hunting connectorNative integration

The connector requires Plan 2 or higher and a separately available Microsoft Sentinel environment.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: IncludedMicrosoft Sentinel
Official source
Automated email investigation and responsePlan-dependent capability

Plan 2 adds AIR from Threat Explorer and for compromised users; Plan 1 retains manual and baseline response workflows.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: Included
Official source
Microsoft Defender XDR hunting and incident correlationPlan-dependent capability

Plan 2 includes the email-side XDR integration. Endpoint, identity, SaaS, and cloud telemetry still depends on the relevant Defender products.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: IncludedMicrosoft Defender XDR
Official source
Phishing simulation and targeted trainingPlan-dependent capability

Attack simulation training is a Plan 2 capability and is not part of Plan 1.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: Included
Official source
Threat Explorer, campaigns, and threat trackersPlan-dependent capability

Plan 1 has Real-time detections instead of Threat Explorer; the deeper investigation views are Plan 2 only.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: Included
Official source
Baseline spam, malware, spoofing, and quarantine protectionSeparate product

This baseline underlies the protection ladder but is not an additional Defender for Office 365 edition.

Exchange Online Protection and built-in security features for cloud mailboxes
Official source
Human-managed detection and responseSeparate product

Defender Experts MDR is a distinct expert-led service, not an included Plan 1 or Plan 2 capability.

Microsoft Defender Experts MDR
Official source
Safe Documents protected-view scanningRelationship not verified

Current Microsoft sources conflict, so no Defender plan inclusion state is asserted.

Plan: Microsoft Defender for Office 365 Plan 1: Unavailable · Microsoft Defender for Office 365 Plan 2: Not verifiedMicrosoft 365 E5 or Microsoft Defender Suite
Official source
How the score is calculated

Scoring method

How the score is calculated

The score uses the category-specific buying dimensions below and their displayed weights.

This page is based on public product information, official sources, structured feature data, and multi-model AI evaluation. It is not a hands-on lab test unless explicitly stated. Confidence percentages describe our research indicators, not the probability that a claim is true or a measured accuracy rate.

Evidence confidence
83%
AI claim confidence
99%
Required-field evidence status
100%
Evidence freshness
54%
Field traceability
100%
Model agreement
87%
Why this confidence level
  • Evidence confidence uses source level and claim-to-source support; AI claim confidence is shown separately.
  • Required-field evidence status measures whether weighted required claims have evidence links; it does not mean every product behavior was independently verified.
  • 8 of 8 weighted claims have evidence links.
  • 7 A1 documentary official sources and 2 A2 official product sources are linked.
  • 1 independent review sources are retained, including 0 professional sources with an explicit hands-on method.
  • 4 weighted claims are past the review window.
  • 1 non-blocking commercial scope issue requires confirmation.
Threat protection efficacy20%
85

Secures communication through real-time attachment detonation and link validation, combined with post-delivery purging to address threats.

Detection accuracy17%
82

Applies dedicated mailbox intelligence and customizable phishing thresholds to adapt detections, although manual tuning is needed to optimize results.

BEC and identity protection15%
86

User and domain impersonation protection together with mailbox intelligence directly address common BEC and identity-spoofing patterns on cloud mailboxes, while priority-account protection and broader XDR correlation require Plan 2.

Response operations14%
83

Automated investigation and response, Threat Explorer, campaigns, threat trackers, and advanced hunting in Plan 2, plus Plan 1 ZAP and alerts, enable structured response operations, but those deeper tools are unavailable on Plan 1 alone.

Platform coverage and deployment13%
74

Restricts its deployment footprint entirely to Microsoft 365 environments, offering no support for non-Microsoft mailbox hosting.

Governance and integrations11%
70

Plan 2 supplies Microsoft Defender XDR incident correlation and cross-domain hunting, while Purview DLP, Sentinel, Safe Documents, and managed MDR remain separate products or entitlements outside standalone Plan 1 or Plan 2.

Support and total cost10%
66

US public rates are USD 2.00 per user per month for Plan 1 and USD 5.00 for Plan 2, both billed annually with a one-year commitment, yet licensing extends to shared mailboxes and collaboration users, no managed response is included, and related DLP, SIEM, or MDR services add separate cost.

Public review signals

Favorable exact-product feedback with recurring setup and licensing complexity

G2 provides a current exact-product aggregate of 4. 5 out of 5 from 292 reviews. Review material commonly values native Microsoft 365 integration, phishing and malware protection, Safe Links, Safe Attachments, and automated response. Recurring cautions concern configuration complexity, policy tuning, false positives, reporting navigation, and licensing clarity.

Public review signals updated: Aug 12, 2026

Commonly reported strengths

  • Native integration across Microsoft 365 email and collaboration workloads
  • Strong phishing, malware, malicious-link, and attachment protection
  • Threat Explorer and automated response can reduce investigation effort

Commonly reported concerns

  • Initial setup and policy tuning can be complex
  • False positives can require manual review
  • Plan, suite, and portal boundaries can be difficult to navigate
G24.5/5
Review count
292 reviews
Source context
Microsoft Defender for Office 365 Reviews on G2Exact product
View sourceHistory baseline established: Aug 12, 2026
Score79
Pricing modelTwo per-user paid editions with public US monthly rates, yearly payment, and an annual commitment. Plan 1 is the prevention and detection tier; Plan 2 is the advanced hunting, automation, training, and XDR tier. Eligible Microsoft suites can provide the same plan rights through broader bundle subscriptions.
Use caseprotect Microsoft 365 email and collaboration workloads from phishing, business email compromise, malicious links, malicious attachments, QR-code attacks, and post-delivery threats
Company sizeEnterprise, Mid-market, Small business
Structured tags

Microsoft Defender for Office 365 tag profile

Company size
  • Enterprise
  • Mid-market
  • Small business
Key features

Microsoft Defender for Office 365 core capabilities

  • Safe Links protection for malicious URLs in email, Office clients, and Microsoft Teams
  • Safe Attachments detonation for email and malicious-file protection in SharePoint, OneDrive, and Teams
  • Advanced anti-phishing with user and domain impersonation protection, mailbox intelligence, and phishing thresholds
  • Real-time protection for malicious links, attachments, and QR-code attacks
  • Plan 1 alerts, real-time detections, email entity context, reporting, and post-delivery ZAP response
  • Plan 2 Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, and priority-account protection
Detailed strengths and purchase cautions
Pros

Why it is worth considering

  • Safe Links and Safe Attachments provide malicious URL and file detonation protection across email, Office clients, Teams, SharePoint, and OneDrive, including real-time coverage for QR-code attacks.
  • Advanced anti-phishing supplies user and domain impersonation protection together with mailbox intelligence to support phishing and related identity-attack detection on cloud mailboxes.
  • Plan 2 adds Threat Explorer, campaign analysis, automated investigation and response, attack simulation training, and Microsoft Defender XDR incident correlation for security-operations workflows.
  • Plan 1 real-time detections, alerts, email entity context, reporting, and post-delivery ZAP enable ongoing remediation after messages reach mailboxes.
Cons

What to confirm before buying

  • Protection is anchored on Microsoft 365 cloud mailboxes, so non-Microsoft mailbox platforms are unsupported and an upstream third-party gateway limits Defender evaluation to audit mode until mail flow changes.
  • Threat Explorer, campaigns, advanced hunting, automated investigation and response, attack simulation training, and cross-domain XDR require Plan 2
  • Plan 1 remains limited to prevention, detection, alerts, and reporting.
  • Licenses must cover benefiting users, shared mailboxes that receive protection, and users covered by Safe Links or collaboration protections, which can expand the licensed population beyond primary mailboxes.
Cross-model buying perspectives

Multi-AI review

Cross-model buying perspectives

Multiple AI models assess this tool against the same buying criteria, so you can compare scores, confidence, fit, cautions, and final views.

AI assessment updated: Sep 23, 2026

Score comparisonGPTGeminixAIRange
Threat protection efficacy91858011
Detection accuracy88827513
BEC and identity protection95808415
Response operations90788112
Platform coverage and deployment82707012
Governance and integrations64757211
Support and total cost58726714
email phishing bec detection9485869
email malware url protection9384889
email policy quarantine control52806828
email incident response workflow89758214
email delivery user experience68857417
Where models differ
  • email policy quarantine control: 52–80 (28-point range)
  • email delivery user experience: 68–85 (17-point range)
  • BEC and identity protection: 80–95 (15-point range)
GPTAI-assisted buyer perspective80

Fit for Microsoft 365 buyers that want native email and collaboration protection with plan-specific escalation from prevention to hunting and response, provided they confirm user licensing scope and whether they need Plan 2 features or an included bundle entitlement.

Review confidence
80/100
Model details
Strengths
  • Plan 1 includes Safe Links, Safe Attachments, advanced anti-phishing and impersonation protection, real-time detections, reporting, and post-delivery ZAP response for Microsoft 365 cloud mailboxes.
  • Plan 2 adds Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, attack simulation training, and Microsoft Defender XDR incident correlation for teams that need deeper security operations workflows.
  • The product is positioned for Microsoft 365 cloud mailbox deployment, which matches organizations that want email and collaboration protection inside the Microsoft stack rather than a separate gateway architecture.
Cautions
  • The commercial model requires licensing for benefiting users and covered shared mailboxes, so buyers need to confirm the scope of every protected mailbox and collaboration user before purchase.
  • The public pricing is billed annually with a one-year commitment, and the supplied facts do not establish a public minimum quantity or cancellation terms.
  • The fact pattern does not establish Safe Documents as a standalone Defender for Office 365 entitlement, so buyers who need that capability should contractually verify the Microsoft SKU or bundle.
GeminiAI-assisted buyer perspective79

Microsoft Defender for Office 365 offers native, integrated security for organizations utilizing Microsoft 365 cloud mailboxes, but buyers must navigate feature gating between Plan 1 and Plan 2 alongside licensing requirements for shared mailboxes and collaboration users.

Review confidence
79/100
Model details
Strengths
  • Extends malicious link and attachment protection beyond email into Microsoft Teams, SharePoint, and OneDrive.
  • Includes Zero-hour Auto Purge (ZAP) to neutralize malicious messages post-delivery.
  • Offers a starting price of USD 2.00 per user/month (billed annually with an annual commitment) for Plan 1 anti-phishing and real-time detection.
Cautions
  • Restricts advanced features like campaign analysis, automated investigation, threat hunting, and simulation training entirely to Plan 2.
  • Requires licensing for all benefiting users, protected shared mailboxes, and users covered by collaboration protections, raising overall deployment cost.
  • Excludes separate corporate capabilities like Safe Documents, Purview DLP, and Defender Experts managed response from standalone plan entitlements.
xAIAI-assisted buyer perspective77

Fits Microsoft 365 organizations that need native advanced email and collaboration threat protection on cloud mailboxes, with Plan 1 covering prevention and detection and Plan 2 adding hunting, automation, and XDR correlation; buyers must license all benefiting users and shared mailboxes and keep mail flow on Microsoft 365 for full protection.

Review confidence
77/100
Model details
Strengths
  • Safe Links and Safe Attachments provide malicious URL and file detonation protection across email, Office clients, Teams, SharePoint, and OneDrive, including real-time coverage for QR-code attacks.
  • Advanced anti-phishing supplies user and domain impersonation protection together with mailbox intelligence to support phishing and related identity-attack detection on cloud mailboxes.
  • Plan 2 adds Threat Explorer, campaign analysis, automated investigation and response, attack simulation training, and Microsoft Defender XDR incident correlation for security-operations workflows.
  • Plan 1 real-time detections, alerts, email entity context, reporting, and post-delivery ZAP enable ongoing remediation after messages reach mailboxes.
Cautions
  • Protection is anchored on Microsoft 365 cloud mailboxes, so non-Microsoft mailbox platforms are unsupported and an upstream third-party gateway limits Defender evaluation to audit mode until mail flow changes.
  • Threat Explorer, campaigns, advanced hunting, automated investigation and response, attack simulation training, and cross-domain XDR require Plan 2
  • Plan 1 remains limited to prevention, detection, alerts, and reporting.
  • Licenses must cover benefiting users, shared mailboxes that receive protection, and users covered by Safe Links or collaboration protections, which can expand the licensed population beyond primary mailboxes.

Research transparency

How this page was researched

A compact record of the evidence used, what was not tested, and which conclusions still need verification.

Official sources
9
Broad product review sources
1
Marketplace and app-store sources
0
Editorial sources
0
Latest evidence check
Aug 12, 2026
Research basis

Global Tool Radar generated this assessment from structured facts linked to public sources. No Global Tool Radar hands-on test is recorded in this page's research data. Any external hands-on assessment is identified separately and does not affect the Global Tool Radar score.

Conflict handling

Unresolved evidence is disclosed on the page; affected deterministic calculations and price schema are withheld when the conflict is blocking.

View research methodology
Verified findingsNo permanent free Defender for Office 365 plan. Eligible existing Microsoft 365 customers can receive automatically provisioned Plan 2 trial licenses for 90 days. Trials and evaluations are unavailable to U.S. Government and Microsoft 365 Education organizations; existing Plan 2 organizations use an unlimited audit-mode evaluation rather than a trial entitlement.
  • Two per-user paid editions with public US monthly rates, yearly payment, and an annual commitment. Plan 1 is the prevention and detection tier; Plan 2 is the advanced hunting, automation, training, and XDR tier. Eligible Microsoft suites can provide the same plan rights through broader bundle subscriptions.
  • Safe Links protection for malicious URLs in email, Office clients, and Microsoft Teams Safe Attachments detonation for email and malicious-file protection in SharePoint, OneDrive, and Teams Advanced anti-phishing with user and domain impersonation protection, mailbox intelligence, and phishing thresholds Real-time protection for malicious links, attachments, and QR-code attacks Plan 1 alerts, real-time detections, email entity context, reporting, and post-delivery ZAP response Plan 2 Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, and priority-account protection Plan 2 attack simulation training and targeted security education Plan 2 Microsoft Defender XDR incident correlation and cross-domain hunting
  • USD 2.00 per user/month, paid yearly with an annual commitment, for Microsoft Defender for Office 365 Plan 1.
  • The exact target has two current core offers: Plan 1 at USD 2.00 per user/month and Plan 2 at USD 5.00 per user/month on the US page, both paid yearly with an annual commitment. Microsoft requires licenses for benefiting users and shared mailboxes and for users covered by collaboration protections. Eligible Office 365 and Microsoft 365 E3 subscriptions include Plan 1 from July 1, 2026; eligible E5 subscriptions and Microsoft Defender Suite provide broader inclusion routes. No public minimum quantity, usage charge, implementation amount, or standalone services fee is retained.
Verification notes and unresolved itemsThe current Plan 2 product card advertises support for opening documents in protected view, while the current feature service description says Safe Documents is available only with Microsoft 365 E5 or Microsoft Defender Suite and is not included in Defender for Office 365 plans. Protected-view scanning is therefore not treated as a confirmed standalone Plan 2 entitlement.
  • The exact target is limited to Microsoft Defender for Office 365 Plan 1 and Plan 2.
  • The US-localized product page binds USD 2.00 and USD 5.00 monthly per-user rates to yearly payment and an explicit annual commitment
  • both offers therefore use a one-year commitment.
  • No monthly-paid counterpart, minimum quantity, usage charge, implementation amount, renewal notice period, cancellation term, tax treatment, or services fee is retained.
Sources checked

Sources checked

Microsoft Defender for Office 365 source links

Microsoft Defender Experts MDRMicrosoftLevel A2Linked to 1 scored claimChecked Aug 12, 2026
Connect Microsoft Defender for Office 365 to Microsoft SentinelMicrosoft LearnLevel A1Linked to 1 scored claimChecked Aug 12, 2026
Built-in security features detailsMicrosoft LearnLevel A1Linked to 1 scored claimChecked Aug 12, 2026
Microsoft Defender for Office 365 in the Microsoft Defender portalMicrosoft LearnLevel A1Linked to 1 scored claimChecked Aug 12, 2026
Try Microsoft Defender for Office 365Microsoft LearnLevel A1Linked to 0 scored claimsChecked Aug 12, 2026
Microsoft Defender for Office 365 Features service descriptionMicrosoft LearnLevel A1Linked to 1 scored claimChecked Aug 12, 2026
Microsoft Defender service descriptionMicrosoft LearnLevel A1Linked to 3 scored claimsChecked Aug 12, 2026
Microsoft Defender for Office 365 overviewMicrosoft LearnLevel A1Linked to 1 scored claimChecked Aug 12, 2026

FAQ

Microsoft Defender for Office 365 FAQ

What is the difference between Defender for Office 365 Plan 1 and Plan 2?

Plan 1 adds Safe Links, Safe Attachments, advanced anti-phishing and impersonation protection, alerts, real-time detections, and collaboration protection. Plan 2 includes Plan 1 and adds Threat Explorer, campaigns, threat trackers, advanced hunting, automated investigation and response, attack simulation training, and XDR capabilities.

Is Exchange Online Protection a Defender for Office 365 plan?

No. Exchange Online Protection and the built-in security features for cloud mailboxes provide baseline anti-spam, malware, spoofing, quarantine, and reporting. Defender for Office 365 adds advanced protection and response above that baseline.

Does Office 365 E5 include Defender for Office 365?

Yes. Microsoft lists Office 365 E5 as providing rights for users to benefit from Defender for Office 365 Plan 2. Office 365 E5 remains a broader bundle, not a separate Defender plan.

Is Microsoft Defender XDR the same product as Defender for Office 365?

No. Defender for Office 365 is the email and collaboration security product. Plan 2 adds integration and cross-domain XDR capabilities, while the wider Defender XDR solution can combine signals from separately licensed endpoint, identity, SaaS, and cloud products.

Is Safe Documents included in standalone Defender for Office 365 Plan 2?

Do not assume it is included. Microsoft's current feature service description excludes Safe Documents from Defender for Office 365 plans and assigns it to Microsoft 365 E5 or Microsoft Defender Suite, despite protected-view wording on the Plan 2 product card.

Is there a free trial?

Eligible existing Microsoft 365 customers can receive a 90-day Defender for Office 365 Plan 2 trial in audit or blocking mode. Government and education organizations are excluded, and the trial is not a permanent plan.

Are shared mailboxes free from licensing?

No blanket exemption is stated. Microsoft requires licenses for shared mailboxes that benefit from Defender for Office 365 protections and for users covered by Safe Links or collaboration protections.

Does the subscription include a managed security service?

No managed human response service is established as part of Plan 1 or Plan 2. Defender Experts MDR is a separate Microsoft managed detection and response service.

Popular comparisons

Common Microsoft Defender for Office 365 comparisons

Only high-scoring and nearby tools from the same subcategory are shown, avoiding comparisons between unrelated use cases.

VS #1
Microsoft Defender for Office 365vsCheck Point Harmony Email & Collaboration
79Gap 178

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VS #2
Microsoft Defender for Office 365vsMimecast Advanced Email Security
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VS #3
Microsoft Defender for Office 365vsFortinet FortiMail
79Gap 180

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