CD ChannelDB
Editorial Evaluation (2026)

10 Best Email Security Software

Email Security helps MSPs deliver robust AI-driven cloud email security without adding complexity. It protects clients from phishing, BEC, ransomware, impersonation, and other email threats that bypass native defenses and even Microsoft Defender for Office 365. AI-driven detection helps reduce manual effort, while AI-generated attack summaries and included incident response support help technicians understand threats quickly and respond with confidence, without needing deep email security expertise. With simple onboarding and centralized multi-tenant management, it is easy to roll out, manage, and scale across clients. With Acronis, MSPs can strengthen protection, stay efficient, and build more value into their security services.

Feature Comparison Grid

Objective comparison of deployment models, buyer fit, evaluation trials, and licensing.

Scroll horizontally to inspect all criteria →
Detailed feature and licensing comparison for 10 Best Email Security Software
Product & VendorBest Suited ForDeploymentCore CapabilitiesTrial / DemoPricing ModelProfile / Site
#1
Proofpoint Email ProtectionBy Proofpoint
Enterprise & Mid-MarketCloud SaaS / HybridAdvanced threat protection, Email encryptionNot confirmedSubscriptionWebsite →
#2
Mimecast Email SecurityBy Mimecast
Enterprise & Mid-MarketCloud SaaS / HybridSpam and malware protection, Targeted threat protectionNot confirmedSubscriptionWebsite →
#3
Barracuda Email Security GatewayBy Barracuda Networks
Enterprise & Mid-MarketCloud SaaS / HybridSpam filtering, Advanced threat protectionNot confirmedSubscriptionWebsite →
#4
Cisco Email SecurityBy Cisco
Enterprise & Mid-MarketCloud SaaS / HybridAdvanced malware protection, Spam blockingNot confirmedSubscriptionWebsite →
#5
Sophos Email SecurityBy Sophos
Enterprise & Mid-MarketCloud SaaS / HybridAdvanced threat protection, Phishing protectionNot confirmedSubscriptionWebsite →
#6
Trend Micro Email SecurityBy Trend Micro
Enterprise & Mid-MarketCloud SaaS / HybridPhishing protection, Ransomware protectionNot confirmedSubscriptionWebsite →
#7
Symantec Email Security.cloudBy Broadcom
Enterprise & Mid-MarketCloud SaaS / HybridAdvanced threat protection, Spam and phishing protectionNot confirmedSubscriptionWebsite →
#8
Fortinet FortiMailBy Fortinet
Enterprise & Mid-MarketCloud SaaS / HybridAdvanced threat protection, Data loss preventionNot confirmedSubscriptionWebsite →
#9
Microsoft Defender for Office 365By Microsoft
Enterprise & Mid-MarketCloud SaaS / HybridPhishing protection, Malware detectionNot confirmedSubscriptionWebsite →
#10
Google Workspace SecurityBy Google
Enterprise & Mid-MarketCloud SaaS / HybridSpam and phishing protection, Advanced threat detectionNot confirmedSubscriptionWebsite →

Detailed Software Profiles

In-depth breakdown of architecture, capabilities, strengths, and buyer considerations.

10 Evaluated
#1

Proofpoint Email Protection

Product by Proofpoint

Custom Quote

Proofpoint Email Protection provides comprehensive email security to protect against phishing, malware, and other email threats.

Key Functional Capabilities

Advanced threat protection Email encryption Data loss prevention URL and attachment defense
Official Vendor Documentation →
#2

Mimecast Email Security

Product by Mimecast

Custom Quote

Mimecast Email Security offers cloud-based email protection against spam, malware, and targeted attacks.

Key Functional Capabilities

Spam and malware protection Targeted threat protection Email continuity Secure messaging
Official Vendor Documentation →
#3

Barracuda Email Security Gateway

Product by Barracuda Networks

Custom Quote

Barracuda Email Security Gateway provides comprehensive protection against email-borne threats and data leaks.

Key Functional Capabilities

Spam filtering Advanced threat protection Data leak prevention Email encryption
Official Vendor Documentation →
#4

Cisco Email Security

Product by Cisco

Custom Quote

Cisco Email Security provides advanced threat protection and data loss prevention for email communications.

Key Functional Capabilities

Advanced malware protection Spam blocking Data loss prevention Email encryption
Official Vendor Documentation →
#5

Sophos Email Security

Product by Sophos

Custom Quote

Sophos Email Security provides comprehensive protection against email threats with advanced threat protection and encryption.

Key Functional Capabilities

Advanced threat protection Phishing protection Email encryption Data loss prevention
Official Vendor Documentation →
#6

Trend Micro Email Security

Product by Trend Micro

Custom Quote

Trend Micro Email Security offers robust protection against phishing, ransomware, and other email threats.

Key Functional Capabilities

Phishing protection Ransomware protection Data loss prevention Email encryption
Official Vendor Documentation →
#7

Symantec Email Security.cloud

Product by Broadcom

Custom Quote

Symantec Email Security.cloud provides cloud-based protection against email threats with advanced threat intelligence.

Key Functional Capabilities

Advanced threat protection Spam and phishing protection Data loss prevention Email encryption
Official Vendor Documentation →
#8

Fortinet FortiMail

Product by Fortinet

Custom Quote

Fortinet FortiMail provides secure email gateway protection with advanced threat defense and data protection.

Key Functional Capabilities

Advanced threat protection Data loss prevention Email encryption Spam filtering
Official Vendor Documentation →
#9

Microsoft Defender for Office 365

Product by Microsoft

Custom Quote

Microsoft Defender for Office 365 provides comprehensive protection against email threats and phishing attacks.

Key Functional Capabilities

Phishing protection Malware detection Safe attachments Safe links
Official Vendor Documentation →
#10

Google Workspace Security

Product by Google

Custom Quote

Google Workspace Security offers robust protection for email and collaboration tools with advanced threat detection.

Key Functional Capabilities

Spam and phishing protection Advanced threat detection Data loss prevention Email encryption
Official Vendor Documentation →
Procurement & Evaluation Guide

How to Evaluate & Select the Right Solution

Consider these core functional, operational, and financial dimensions before finalizing an agreement or migration plan.

1

Key feature evaluation

Ensure the platform offers the exact tools your team needs to succeed.

2

Integration capabilities

Check integrations with your existing CRM and software stack.