
Top picks: ConnectWise Email Security, Vade (Hornetsecurity) 365 Total Protection, Cisco Secure Email Threat Defense — plus 45 more compared.
Email SecurityMicrosoft Defender for Office 365 is a commercial Email Security Platforms tool developed by Microsoft. Security professionals most commonly compare it with . All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.
A closer look at the 8 most relevant alternatives and competitors to Microsoft Defender for Office 365, including their key features and shared capabilities.
Email security platform with AI threat detection, BEC protection, and DLP
AI-powered email security platform for Microsoft 365 with backup & compliance.
Email threat protection for Microsoft 365 with advanced detection capabilities
Comprehensive M365 security suite with email protection, backup, and compliance
Cloud email security for Microsoft 365 and Google Workspace applications
Cloud-native email security platform with SEG and API-based protection
Enterprise email security platform for cloud and on-premise deployments
Email security platform protecting against phishing, malware, and exploits
Email security platform with AI threat detection, BEC protection, and DLP
AI-powered email security platform for Microsoft 365 with backup & compliance.
Email threat protection for Microsoft 365 with advanced detection capabilities
Comprehensive M365 security suite with email protection, backup, and compliance
Cloud email security for Microsoft 365 and Google Workspace applications
Cloud-native email security platform with SEG and API-based protection
Enterprise email security platform for cloud and on-premise deployments
Email security platform protecting against phishing, malware, and exploits
Bundled cybersecurity solutions for MSPs and end users with email protection
Email security platform for Microsoft 365 with AI-based threat detection
Secures Microsoft Teams, SharePoint & OneDrive from malware and phishing
AI-driven email security platform for Microsoft 365 inbound/outbound threats
Email security platform enhanced with multi-tenant mgmt & automation tools
AI-powered email security platform protecting against phishing, BEC, and ATO
AI-based email security for M365 with phishing, BEC & malware detection.
AI-powered email security platform protecting against phishing, BEC, and ATO
Cloud-based email security platform protecting against phishing, ransomware, BEC
Email security platform with phishing/BEC protection and MDR/XDR integration
File-based threat protection for Microsoft 365 using CDR technology
Email security platform protecting M365 & Google Workspace from threats
AI-powered email security platform for threat detection and compliance
Email security platform with AI-based threat detection and DLP capabilities
Cloud email security platform for inbound/outbound threat detection & DLP
Managed Proofpoint email security service for phishing & BEC protection.
Managed email security service for Office 365 using Cisco's platform.
Tiered cybersecurity bundles combining email, DNS, backup & SAT.
Email security layer for M365 with anti-phishing, sandboxing, and DLP.
Cloudflare Cloud Email Security is a cloud-based email protection service that safeguards organizations against phishing, malware, spam, and other email-borne threats through integrated threat detection and prevention capabilities.
Behavioral email security platform protecting inbound, outbound, and internal mail
Email security platform with inline threat protection and compliant archiving
Cloud-based email security platform protecting against phishing & ransomware
Cloud-native email security platform for phishing detection and response
All-in-one email security platform for threat protection and compliance
Cloud-based email security platform with AI-powered threat detection
AI-driven email security platform for detecting advanced email threats
AI-powered email and collaboration security platform for threat detection
Email security platform protecting against fraud, malware, and spam threats
Email security for Microsoft Exchange servers with anti-spam and anti-malware
Email security for Microsoft Exchange servers with antispam and antimalware.
AI-powered email security platform detecting threats across email and messaging
Centralized platform for reporting, analyzing, and responding to email threats
MX-based email security platform using AI to block spam, phishing & malware
AI-powered email security platform for phishing and BEC protection
AI-powered email security platform with behavioral detection and automation
ATP solution for SaaS & email with AI-driven detection & auto-response
Managed email filtering service with threat detection and spam prevention
Common questions security professionals ask when evaluating alternatives and competitors to Microsoft Defender for Office 365.
The most popular alternatives to Microsoft Defender for Office 365 include ConnectWise Email Security, Vade (Hornetsecurity) 365 Total Protection, Cisco Secure Email Threat Defense, Hornetsecurity 365 Total Protection, and ESET Cloud Office Security. These Email Security Platforms tools offer similar capabilities and are frequently compared by security professionals evaluating their options.