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This guide zooms in on one niche — the complete Email Security & Phishing Protection list is available here.

Email Security Tools for Microsoft 365
Albert Richer

In the landscape of email security tools for Microsoft 365, market research indicates that the best solutions prioritize advanced threat detection and user-friendly interfaces. Customer review analysis shows common patterns: users frequently mention that tools like Mimecast and Barracuda consistently earn high marks for their robust phishing protection and seamless integration. In the landscape of email security tools for Microsoft 365, market research indicates that the best solutions prioritize advanced threat detection and user-friendly interfaces. Customer review analysis shows common patterns: users frequently mention that tools like Mimecast and Barracuda consistently earn high marks for their robust phishing protection and seamless integration.

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1
Expert Score
9.8 / 10
439
83
COMPLIANCE READY
MALWARE BUSTER
COMPLIANCE READY
MALWARE BUSTER

Why We Love It

Microsoft Defender for Office 365 is a must-have for organizations using Microsoft 365. It provides unparalleled security, protecting businesses from advanced cyberattacks on email and collaboration tools. It integrates seamlessly with Microsoft 365, providing a secure environment without disrupting workflow. The constant updates ensure businesses are always protected from the latest threats, making it a favorite among industry professionals.

Pros

  • Advanced cyber threat protection
  • Seamless integration with Microsoft 365
  • Constant updates and improvements

Cons

  • Primarily for Office 365 users
  • Requires technical know-how
  • Additional cost to Microsoft 365 subscription

Starting at $2.00 user/month

Microsoft Defender for Office 365 is an advanced protection tool specifically designed for Office 365 users. It offers robust protection against various cyber threats across email and Microsoft 365 collaboration tools, addressing the industry's need for secure and uninterrupted communication and collaboration.

Pros

  • Advanced cyber threat protection
  • Seamless integration with Microsoft 365
  • Constant updates and improvements

Cons

  • Primarily for Office 365 users
  • Requires technical know-how
  • Additional cost to Microsoft 365 subscription
COMPLIANCE READY
MALWARE BUSTER

Why We Love It

Microsoft Defender for Office 365 is a must-have for organizations using Microsoft 365. It provides unparalleled security, protecting businesses from advanced cyberattacks on email and collaboration tools. It integrates seamlessly with Microsoft 365, providing a secure environment without disrupting workflow. The constant updates ensure businesses are always protected from the latest threats, making it a favorite among industry professionals.

Pros

  • Advanced cyber threat protection
  • Seamless integration with Microsoft 365
  • Constant updates and improvements

Cons

  • Primarily for Office 365 users
  • Requires technical know-how
  • Additional cost to Microsoft 365 subscription

Why We Love It

Microsoft Defender for Office 365 is a must-have for organizations using Microsoft 365. It provides unparalleled security, protecting businesses from advanced cyberattacks on email and collaboration tools. It integrates seamlessly with Microsoft 365, providing a secure environment without disrupting workflow. The constant updates ensure businesses are always protected from the latest threats, making it a favorite among industry professionals.

Starting at $2.00 user/month

Microsoft Defender for Office 365 is an advanced protection tool specifically designed for Office 365 users. It offers robust protection against various cyber threats across email and Microsoft 365 collaboration tools, addressing the industry's need for secure and uninterrupted communication and collaboration.

2
Expert Score
9.6 / 10
565
155
AI-DRIVEN SECURITY
24/7 SUPPORT
AI-DRIVEN SECURITY
24/7 SUPPORT

Why We Love It

We appreciate Mimecast Office 365 Email Security for its robust, industry-specific features. It provides crucial security, particularly to industries dealing with sensitive data, by offering advanced protection against email threats. Its seamless integration with Microsoft 365 and real-time scanning make it a reliable solution for professionals in IT Security & Compliance, who value its commitment to safeguard their email communications.

Pros

  • Comprehensive email threat protection
  • Seamless integration with Microsoft 365
  • Real-time scanning of URLs and attachments
  • Advanced threat intelligence
  • 24/7 customer support

Cons

  • May require technical skills to fully utilize
  • Pricing might be high for smaller businesses

Enterprise pricing available

Mimecast Office 365 Email Security is a specialized solution designed to protect Microsoft 365 users from email threats like phishing, malicious URLs, and hazardous attachments. It meets the industry's need for advanced email security features and reliable threat protection.

Pros

  • Comprehensive email threat protection
  • Seamless integration with Microsoft 365
  • Real-time scanning of URLs and attachments
  • Advanced threat intelligence
  • 24/7 customer support

Cons

  • May require technical skills to fully utilize
  • Pricing might be high for smaller businesses
AI-DRIVEN SECURITY
24/7 SUPPORT

Why We Love It

We appreciate Mimecast Office 365 Email Security for its robust, industry-specific features. It provides crucial security, particularly to industries dealing with sensitive data, by offering advanced protection against email threats. Its seamless integration with Microsoft 365 and real-time scanning make it a reliable solution for professionals in IT Security & Compliance, who value its commitment to safeguard their email communications.

Pros

  • Comprehensive email threat protection
  • Seamless integration with Microsoft 365
  • Real-time scanning of URLs and attachments
  • Advanced threat intelligence
  • 24/7 customer support

Cons

  • May require technical skills to fully utilize
  • Pricing might be high for smaller businesses

Why We Love It

We appreciate Mimecast Office 365 Email Security for its robust, industry-specific features. It provides crucial security, particularly to industries dealing with sensitive data, by offering advanced protection against email threats. Its seamless integration with Microsoft 365 and real-time scanning make it a reliable solution for professionals in IT Security & Compliance, who value its commitment to safeguard their email communications.

Enterprise pricing available

Mimecast Office 365 Email Security is a specialized solution designed to protect Microsoft 365 users from email threats like phishing, malicious URLs, and hazardous attachments. It meets the industry's need for advanced email security features and reliable threat protection.

3
Expert Score
9.4 / 10
548
126
COST-EFFECTIVE PROTECTION
COST-EFFECTIVE PROTECTION

Why We Love It

What makes Fortra's solution standout is its seamless integration with Microsoft 365 - a platform widely used in the industry. It provides a robust and cost-effective way to stop phishing attacks and secure business communications without disrupting workflow. Industry professionals love it for its simplicity, effectiveness, and ability to let them focus on their operations without worrying about email security.

Pros

  • Enhanced Microsoft 365 security
  • Cost-effective protection
  • Efficient phishing threat mitigation
  • Easy integration with existing systems
  • 24/7 support

Cons

  • Limited customization
  • Reliance on Microsoft 365
  • May be overkill for smaller businesses

Enterprise pricing available

Fortra's solution is a robust SaaS offering designed to bolster Microsoft 365's email security. It specifically addresses the industry's need for secure, uninterrupted business communications, whilst providing cost-effective and efficient protection against email phishing and other threats.

Pros

  • Enhanced Microsoft 365 security
  • Cost-effective protection
  • Efficient phishing threat mitigation
  • Easy integration with existing systems
  • 24/7 support

Cons

  • Limited customization
  • Reliance on Microsoft 365
  • May be overkill for smaller businesses
COST-EFFECTIVE PROTECTION

Why We Love It

What makes Fortra's solution standout is its seamless integration with Microsoft 365 - a platform widely used in the industry. It provides a robust and cost-effective way to stop phishing attacks and secure business communications without disrupting workflow. Industry professionals love it for its simplicity, effectiveness, and ability to let them focus on their operations without worrying about email security.

Pros

  • Enhanced Microsoft 365 security
  • Cost-effective protection
  • Efficient phishing threat mitigation
  • Easy integration with existing systems
  • 24/7 support

Cons

  • Limited customization
  • Reliance on Microsoft 365
  • May be overkill for smaller businesses

Why We Love It

What makes Fortra's solution standout is its seamless integration with Microsoft 365 - a platform widely used in the industry. It provides a robust and cost-effective way to stop phishing attacks and secure business communications without disrupting workflow. Industry professionals love it for its simplicity, effectiveness, and ability to let them focus on their operations without worrying about email security.

Enterprise pricing available

Fortra's solution is a robust SaaS offering designed to bolster Microsoft 365's email security. It specifically addresses the industry's need for secure, uninterrupted business communications, whilst providing cost-effective and efficient protection against email phishing and other threats.

4
Expert Score
9.2 / 10
490
55
PHISHING SHIELD
REAL-TIME DEFENSE

Avanan for Office 365

Avanan for Office 365
View Website
Enterprise pricing available
PHISHING SHIELD
REAL-TIME DEFENSE

Why We Love It

Avanan stands out for its proactive approach to email security. It not only protects against known threats but also employs advanced algorithms to identify and halt unknown or emerging threats. This is particularly crucial for industry professionals who deal with sensitive information and cannot afford any breaches. Its seamless integration with Office 365 makes it a convenient and efficient tool in the fight against email-based threats.

Pros

  • Comprehensive threat protection
  • Seamless integration with Office 365
  • Real-time threat detection and response

Cons

  • Potential complexity of setup
  • May require dedicated IT personnel for management

Enterprise pricing available

Avanan is a robust email security solution specifically designed for Office 365. It offers comprehensive protection against phishing, malware, and account takeover threats, making it an integral tool for organizations keen on safeguarding their email communication channels.

Pros

  • Comprehensive threat protection
  • Seamless integration with Office 365
  • Real-time threat detection and response

Cons

  • Potential complexity of setup
  • May require dedicated IT personnel for management
PHISHING SHIELD
REAL-TIME DEFENSE

Why We Love It

Avanan stands out for its proactive approach to email security. It not only protects against known threats but also employs advanced algorithms to identify and halt unknown or emerging threats. This is particularly crucial for industry professionals who deal with sensitive information and cannot afford any breaches. Its seamless integration with Office 365 makes it a convenient and efficient tool in the fight against email-based threats.

Pros

  • Comprehensive threat protection
  • Seamless integration with Office 365
  • Real-time threat detection and response

Cons

  • Potential complexity of setup
  • May require dedicated IT personnel for management

Why We Love It

Avanan stands out for its proactive approach to email security. It not only protects against known threats but also employs advanced algorithms to identify and halt unknown or emerging threats. This is particularly crucial for industry professionals who deal with sensitive information and cannot afford any breaches. Its seamless integration with Office 365 makes it a convenient and efficient tool in the fight against email-based threats.

Enterprise pricing available

Avanan is a robust email security solution specifically designed for Office 365. It offers comprehensive protection against phishing, malware, and account takeover threats, making it an integral tool for organizations keen on safeguarding their email communication channels.

5
Expert Score
8.9 / 10
428
84
ADVANCED THREAT DEFENSE
ADVANCED THREAT DEFENSE

Why We Love It

We love Spambrella for Microsoft 365 because it takes the email security a notch higher. For IT Security & Compliance professionals, it offers peace of mind knowing that the organization's sensitive data is protected against complex email threats. Its artificial intelligence and machine learning capabilities ensure advanced threat detection and prevention, meeting the evolving needs of this industry. Plus, its seamless integration with Microsoft 365 makes it a go-to choice for many.

Pros

  • Advanced Threat Protection
  • AI-driven spam filtering
  • Data Loss Prevention
  • Intuitive interface
  • 24/7 support

Cons

  • Requires tech savvy users
  • Deployment complexity
  • Might overlap with existing Microsoft 365 security features

Enterprise pricing available.

Spambrella is a powerful email security solution for organizations using Microsoft 365. It enhances the native security features of Microsoft 365, providing robust protection against phishing, malware and spam emails. Its ability to fine-tune email filtering and threat intelligence updates meet the unique needs of IT Security & Compliance professionals.

Pros

  • Advanced Threat Protection
  • AI-driven spam filtering
  • Data Loss Prevention
  • Intuitive interface
  • 24/7 support

Cons

  • Requires tech savvy users
  • Deployment complexity
  • Might overlap with existing Microsoft 365 security features
ADVANCED THREAT DEFENSE

Why We Love It

We love Spambrella for Microsoft 365 because it takes the email security a notch higher. For IT Security & Compliance professionals, it offers peace of mind knowing that the organization's sensitive data is protected against complex email threats. Its artificial intelligence and machine learning capabilities ensure advanced threat detection and prevention, meeting the evolving needs of this industry. Plus, its seamless integration with Microsoft 365 makes it a go-to choice for many.

Pros

  • Advanced Threat Protection
  • AI-driven spam filtering
  • Data Loss Prevention
  • Intuitive interface
  • 24/7 support

Cons

  • Requires tech savvy users
  • Deployment complexity
  • Might overlap with existing Microsoft 365 security features

Why We Love It

We love Spambrella for Microsoft 365 because it takes the email security a notch higher. For IT Security & Compliance professionals, it offers peace of mind knowing that the organization's sensitive data is protected against complex email threats. Its artificial intelligence and machine learning capabilities ensure advanced threat detection and prevention, meeting the evolving needs of this industry. Plus, its seamless integration with Microsoft 365 makes it a go-to choice for many.

Enterprise pricing available.

Spambrella is a powerful email security solution for organizations using Microsoft 365. It enhances the native security features of Microsoft 365, providing robust protection against phishing, malware and spam emails. Its ability to fine-tune email filtering and threat intelligence updates meet the unique needs of IT Security & Compliance professionals.

6
Expert Score
8.7 / 10
405
55
USER-FRIENDLY INTERFACE
USER-FRIENDLY INTERFACE

Why We Love It

Barracuda Email Protection is a comprehensive security solution for Microsoft 365 users. It not only offers advanced threat defense against phishing and business email compromise, but also incorporates user awareness training to mitigate human error. This combination of advanced technology and user education makes it a standout choice for industry professionals who rely heavily on Microsoft 365 for their business communications.

Pros

  • Tailored protection for Microsoft 365
  • Advanced threat defense
  • User awareness training
  • Intuitive UI
  • 24/7 support

Cons

  • Requires technical expertise for setup
  • May be overkill for smaller businesses

Enterprise pricing available

Barracuda Email Protection provides superior security for Microsoft 365 email, guarding against threats like phishing, business email compromise, and account takeovers. It's specifically designed for industry professionals needing robust, seamless protection for their email communication within the Microsoft 365 environment.

Pros

  • Tailored protection for Microsoft 365
  • Advanced threat defense
  • User awareness training
  • Intuitive UI
  • 24/7 support

Cons

  • Requires technical expertise for setup
  • May be overkill for smaller businesses
USER-FRIENDLY INTERFACE

Why We Love It

Barracuda Email Protection is a comprehensive security solution for Microsoft 365 users. It not only offers advanced threat defense against phishing and business email compromise, but also incorporates user awareness training to mitigate human error. This combination of advanced technology and user education makes it a standout choice for industry professionals who rely heavily on Microsoft 365 for their business communications.

Pros

  • Tailored protection for Microsoft 365
  • Advanced threat defense
  • User awareness training
  • Intuitive UI
  • 24/7 support

Cons

  • Requires technical expertise for setup
  • May be overkill for smaller businesses

Why We Love It

Barracuda Email Protection is a comprehensive security solution for Microsoft 365 users. It not only offers advanced threat defense against phishing and business email compromise, but also incorporates user awareness training to mitigate human error. This combination of advanced technology and user education makes it a standout choice for industry professionals who rely heavily on Microsoft 365 for their business communications.

Enterprise pricing available

Barracuda Email Protection provides superior security for Microsoft 365 email, guarding against threats like phishing, business email compromise, and account takeovers. It's specifically designed for industry professionals needing robust, seamless protection for their email communication within the Microsoft 365 environment.

7
Expert Score
8.5 / 10
385
129
EMAIL CONTINUITY
EMAIL CONTINUITY

Why We Love It

Guardian Digital's Microsoft 365 Email Security solution stands out for its robust, AI-powered features and seamless integration with Microsoft 365. It offers real-time monitoring, which is crucial for businesses to prevent costly and damaging cyber attacks. Furthermore, it helps ensure compliance, a key concern for many businesses. Its 24/7 support is a bonus, making it an ideal choice for businesses looking for a comprehensive email security solution.

Pros

  • AI-driven threat detection
  • Real-time protection
  • Seamless Microsoft 365 integration
  • Compliance enforcement
  • 24/7 support

Cons

  • May require technical knowledge
  • Pricey for small businesses

Enterprise pricing available

Guardian Digital's Microsoft 365 Email Security is an AI-powered solution tailored for businesses needing advanced protection for their cloud email platform. This SaaS solution integrates seamlessly with Microsoft 365, providing real-time threat detection, reducing cyber attack risks, and ensuring compliance.

Pros

  • AI-driven threat detection
  • Real-time protection
  • Seamless Microsoft 365 integration
  • Compliance enforcement
  • 24/7 support

Cons

  • May require technical knowledge
  • Pricey for small businesses
EMAIL CONTINUITY

Why We Love It

Guardian Digital's Microsoft 365 Email Security solution stands out for its robust, AI-powered features and seamless integration with Microsoft 365. It offers real-time monitoring, which is crucial for businesses to prevent costly and damaging cyber attacks. Furthermore, it helps ensure compliance, a key concern for many businesses. Its 24/7 support is a bonus, making it an ideal choice for businesses looking for a comprehensive email security solution.

Pros

  • AI-driven threat detection
  • Real-time protection
  • Seamless Microsoft 365 integration
  • Compliance enforcement
  • 24/7 support

Cons

  • May require technical knowledge
  • Pricey for small businesses

Why We Love It

Guardian Digital's Microsoft 365 Email Security solution stands out for its robust, AI-powered features and seamless integration with Microsoft 365. It offers real-time monitoring, which is crucial for businesses to prevent costly and damaging cyber attacks. Furthermore, it helps ensure compliance, a key concern for many businesses. Its 24/7 support is a bonus, making it an ideal choice for businesses looking for a comprehensive email security solution.

Enterprise pricing available

Guardian Digital's Microsoft 365 Email Security is an AI-powered solution tailored for businesses needing advanced protection for their cloud email platform. This SaaS solution integrates seamlessly with Microsoft 365, providing real-time threat detection, reducing cyber attack risks, and ensuring compliance.

Product Comparison

Product Has Mobile App Has Free Plan Has Free Trial Integrates With Zapier Has Public API Live Chat Support SOC 2 or ISO Certified Popular Integrations Supports SSO Starting Price
1Microsoft Defender for Office 365
No No Contact for trial No Enterprise API only No SOC 2 Microsoft 365, Azure, Microsoft Teams Yes $2.00/user/month
2Mimecast Office 365 Email Security
No No Contact for trial No Enterprise API only Yes ISO 27001 Microsoft 365, Salesforce, Google Workspace Yes Enterprise pricing available
3Microsoft 365 Email Security
No No Contact for trial No Not specified Yes Not specified Microsoft 365, Azure, Microsoft Teams Yes Enterprise pricing available
4Spambrella for Microsoft 365
No No Contact for trial No Not specified Yes Not specified Microsoft 365, Azure, Microsoft Teams Yes Enterprise pricing available
5Fortra Microsoft 365 Email Security
No No Contact for trial No Not specified Yes Not specified Microsoft 365, Azure, Microsoft Teams Yes Enterprise pricing available
6Barracuda Email Protection for Microsoft 365
No No Contact for trial No Enterprise API only Yes SOC 2 Microsoft 365, Azure, Microsoft Teams Yes Enterprise pricing available
7Avanan for Office 365
No No Contact for trial No Not specified Yes Not specified Microsoft 365, Azure, Microsoft Teams Yes Enterprise pricing available
1

Microsoft Defender for Office 365

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Enterprise API only
Live Chat Support
No
SOC 2 or ISO Certified
SOC 2
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
$2.00/user/month
2

Mimecast Office 365 Email Security

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Enterprise API only
Live Chat Support
Yes
SOC 2 or ISO Certified
ISO 27001
Popular Integrations
Microsoft 365, Salesforce, Google Workspace
Supports SSO
Yes
Starting Price
Enterprise pricing available
3

Microsoft 365 Email Security

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Not specified
Live Chat Support
Yes
SOC 2 or ISO Certified
Not specified
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
Enterprise pricing available
4

Spambrella for Microsoft 365

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Not specified
Live Chat Support
Yes
SOC 2 or ISO Certified
Not specified
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
Enterprise pricing available
5

Fortra Microsoft 365 Email Security

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Not specified
Live Chat Support
Yes
SOC 2 or ISO Certified
Not specified
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
Enterprise pricing available
6

Barracuda Email Protection for Microsoft 365

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Enterprise API only
Live Chat Support
Yes
SOC 2 or ISO Certified
SOC 2
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
Enterprise pricing available
7

Avanan for Office 365

Has Mobile App
No
Has Free Plan
No
Has Free Trial
Contact for trial
Integrates With Zapier
No
Has Public API
Not specified
Live Chat Support
Yes
SOC 2 or ISO Certified
Not specified
Popular Integrations
Microsoft 365, Azure, Microsoft Teams
Supports SSO
Yes
Starting Price
Enterprise pricing available

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How We Rank Products

How We Evaluate Products

Our Evaluation Process

The 'How We Choose' section for email security tools for Microsoft 365 highlights a comprehensive methodology centered on critical evaluation criteria such as specifications, features, customer reviews, ratings, and overall value. Key considerations for this category include the effectiveness of threat detection, integration capabilities with Microsoft 365, user-friendliness, and the extent of advanced security features like anti-phishing and data loss prevention. Rankings were determined by analyzing a wide array of data sources, including comparative assessments of specifications, thorough analysis of customer feedback and ratings, and evaluation of the price-to-value ratio, ensuring an objective and well-rounded selection process.

Verification

  • Products evaluated through comprehensive research and analysis of email security features specific to Microsoft 365.
  • Rankings based on a thorough examination of user feedback, expert reviews, and industry standards.
  • Selection criteria focus on essential factors such as phishing protection, spam filtering, and data loss prevention capabilities.

As an Amazon Associate, we earn from qualifying purchases. We may also earn commissions from other affiliate partners.

Frequently Asked Questions About Email Security Tools for Microsoft 365

What makes a email security tools for microsoft 365 the "best"?

We evaluate products based on quality, performance, value for money, user reviews, durability, and ease of use. Our rankings are updated regularly to reflect the latest market offerings and user feedback.

How often do you update your email security tools for microsoft 365 recommendations?

Our team continuously monitors the market for new products and updates our recommendations quarterly. We also adjust rankings based on user feedback and new testing results.

Do you test all the products you recommend?

Yes, whenever possible, we physically test products in our labs. For products we can't test directly, we rely on verified user reviews, expert opinions, and detailed specifications to make informed recommendations.

What if I'm looking for a specific type of email security tools for microsoft 365?

Our top 10 list covers the most popular and highly-rated options. If you have specific requirements, check our detailed product descriptions and pros/cons to find the best match for your needs.

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Score Breakdown

0.0 / 10
Excellent

What This Award Means