The closest OPSWAT MetaDefender Email Security alternatives are Fortra Email Security & Anti-Phishing, ESET Cloud Office Security and ID Agent Graphus. Picking an OPSWAT MetaDefender Email Security alternative comes down to fit: Email Security Platforms coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
43 alternativesClosest matches: Fortra Email Security & Anti-Phishing, ESET Cloud Office Security, ID Agent GraphusPage updated Nov 2026
The product
OPSWAT MetaDefender Email Security
by OPSWAT
Email security platform protecting against phishing, malware, and exploits
OPSWAT MetaDefender Email Security is a commercial Email Security Platforms solution made by OPSWAT. The closest matches by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, ESET Cloud Office Security, ID Agent Graphus, GLIMPS Email Security for M365, and SpamTitan for Office 365. All 43 alternatives on this page are ranked the same way.
These 8 solutions overlap most with OPSWAT MetaDefender Email Security. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Email security platform protecting against phishing, BEC, and data loss
Key features: DMARC email authentication and enforcement, Business email compromise detection, Spear phishing protection, Account takeover detection, Data loss prevention for sensitive data
Email security platform protecting against phishing, BEC, and data loss
Cloud email security for Microsoft 365 and Google Workspace applications
AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.
AI-based email security for M365 with phishing, BEC & malware detection.
Email security layer for M365 with anti-phishing, sandboxing, and DLP.
AI-powered email security platform protecting against phishing, BEC, and ATO
Cloud-based email security platform protecting against phishing, ransomware, BEC
Cloud-based email security platform protecting against phishing & ransomware
Email security platform protecting M365 & Google Workspace from 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 antispam and antimalware.
Email security platform for Microsoft 365 with AI-based threat detection
AI-driven email security platform for Microsoft 365 inbound/outbound threats
Email security platform with AI threat detection, BEC protection, and DLP
Cloud-native AI email security platform with LLM-based threat detection and DLP.
Agentic AI email security platform that investigates emails pre-delivery.
Cloud-based email security service that blocks spam, phishing, malware, and fraud attacks
Email and collaboration security for Microsoft 365 environments
AI-driven email security platform for detecting advanced email threats
Email threat protection for Microsoft 365 with advanced detection capabilities
Email security platform enhanced with multi-tenant mgmt & automation tools
Email security platform protecting against phishing, malware, and BEC attacks
Email security gateway with anti-spam, AV, sandboxing, and DLP.
Cloud security platform for M365 covering email, backup, and awareness.
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 phishing/BEC protection and MDR/XDR integration
Email security platform with inline threat protection and compliant archiving
AI-powered email security platform for threat detection and compliance
Cloud-based email security platform with AI-powered threat detection
Email security platform with AI-based threat detection and DLP capabilities
Cloud workspace security platform for email, files, and account protection
AI-powered DMARC monitoring and email authentication security platform
Enterprise email security platform for cloud and on-premise deployments
AI-powered email security platform detecting threats across email and messaging
Bundled cybersecurity solutions for MSPs and end users with email protection
MX-based email security platform using AI to block spam, phishing & malware
Email filtering service protecting against spam, viruses, and phishing.
Managed Proofpoint email security service for phishing & BEC protection.
DMARC monitoring platform protecting domains from spoofing and BEC attacks.
Common questions when weighing alternatives to OPSWAT MetaDefender Email Security.
The closest matches to OPSWAT MetaDefender Email Security by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, ESET Cloud Office Security, ID Agent Graphus, GLIMPS Email Security for M365, and SpamTitan for Office 365. All of them are Email Security Platforms products.
This page shows 43 alternatives to OPSWAT MetaDefender Email Security, all in the Email Security Platforms category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
OPSWAT MetaDefender Email Security is a commercial Email Security Platforms product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
OPSWAT MetaDefender Email Security is a Email Security Platforms product in the Email & Messaging Security category. You can compare it with the 43 other Email Security Platforms products on this page.
View Fortra Email Security & Anti-PhishingFortra Email Security & Anti-Phishing alternativesOPSWAT MetaDefender Email Security vs Fortra Email Security & Anti-Phishing
Cloud email security for Microsoft 365 and Google Workspace applications
Key features: 10 listed. See them on the ESET Cloud Office Security page.
View ESET Cloud Office SecurityESET Cloud Office Security alternativesOPSWAT MetaDefender Email Security vs ESET Cloud Office Security
AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.
Key features: 10 listed. See them on the ID Agent Graphus page.
View ID Agent GraphusID Agent Graphus alternativesOPSWAT MetaDefender Email Security vs ID Agent Graphus
AI-based email security for M365 with phishing, BEC & malware detection.
Key features: 10 listed. See them on the GLIMPS Email Security for M365 page.
View GLIMPS Email Security for M365GLIMPS Email Security for M365 alternativesOPSWAT MetaDefender Email Security vs GLIMPS Email Security for M365
Email security layer for M365 with anti-phishing, sandboxing, and DLP.
Key features: 10 listed. See them on the SpamTitan for Office 365 page.
View SpamTitan for Office 365SpamTitan for Office 365 alternativesOPSWAT MetaDefender Email Security vs SpamTitan for Office 365
AI-powered email security platform protecting against phishing, BEC, and ATO
Key features: 10 listed. See them on the Fortinet FortiMail Email and Workspace Security page.
View Fortinet FortiMail Email and Workspace SecurityFortinet FortiMail Email and Workspace Security alternativesOPSWAT MetaDefender Email Security vs Fortinet FortiMail Email and Workspace Security
Cloud-based email security platform protecting against phishing, ransomware, BEC
Key features: 8 listed. See them on the Cellopoint Cloud Email Security Solution page.
View Cellopoint Cloud Email Security SolutionCellopoint Cloud Email Security Solution alternativesOPSWAT MetaDefender Email Security vs Cellopoint Cloud Email Security Solution
Cloud-based email security platform protecting against phishing & ransomware
Key features: 10 listed. See them on the SorbSecurity Cloud Email Security page.
View SorbSecurity Cloud Email SecuritySorbSecurity Cloud Email Security alternativesOPSWAT MetaDefender Email Security vs SorbSecurity Cloud Email Security
Need the answer fast? Best Email Security Solutions for Business picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more.See the shortlist