Microsoft Defender for Office 365
SE Labs names Defender for Office 365 “Best Email Security Service”
Integrated threat protection for your email and collaboration tools
Be more efficient
Save up to 60 percent by using Microsoft Security rather than multiple point solutions.1
Capabilities
A holistic view of threat protection
Defender for Office 365 supports organizations throughout the lifecycle of an attack.
Industry recognition
Microsoft Security is a recognized industry leader.

The Forrester Wave™: Enterprise Email Security
Microsoft Defender for Office 365 has been named a Leader in The Forrester Wave™: Enterprise Email Security, Q2 2021.

SE Labs: Best Email Security Service
Defender for Office 365 was recognized by SE Labs as the “Best Email Security Service” in 2023.
Compare flexible purchase options
Explore the comprehensive security capabilities offered by Microsoft Defender for Office 365 Plan 1 and Microsoft Defender for Office 365 Plan 2. These capabilities are also included in Microsoft 365 E5 Security.
Microsoft Defender for Office 365 Plan 1
user/month
- Protection against advanced attacks, such as phishing, malware, spam, and business email compromise
- Protection beyond email (Microsoft Teams, SharePoint, OneDrive, and Office apps)
- Internal email protection
- Detailed reporting
Microsoft Defender for Office 365 Plan 2
user/month
- Protection against advanced attacks, such as phishing, malware, spam, and business email compromise
- Protection beyond email (Microsoft Teams, SharePoint, OneDrive, and Office apps)
- Internal email protection
- Detailed reporting
- Advanced threat hunting
- Automated investigation and response
- Attack simulation training
- Microsoft 365 Defender (XDR) capabilities, such as cross-domain hunting and incident correlation
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More about Defender for Office 365
Blog
Stay up to date
Get product news, configuration guidance, tips, and other information.
Datasheet
Help protect your business
Learn how Defender for Office 365 helps keep your email, data, and business secure.
Documentation
Explore documentation
Review technical guidance for Defender for Office 365.
Training
Become an expert
Train to become an expert in Defender for Office 365, whether you’re a beginner or have experience.
Protect everything
Microsoft Defender for Office 365 helps organizations secure their enterprise with a comprehensive slate of capabilities for prevention, detection, investigation and hunting, response and remediation, awareness and training, and achieving a secure posture.