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48 Best OpenText Email Security Alternatives & Competitors (2026) | CybersecTools

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Alternatives
OpenText Email Security

Best OpenText Email Security Alternatives & Competitors in 2026

Top picks: Cybonet Mail Secure, Mesh Gateway, ID Agent Graphus — plus 45 more compared.

Email & Messaging Security

Evaluating OpenText Email Security alternatives comes down to matching Email & Messaging Security capabilities to your environment, integrations, and budget rather than chasing feature parity. The options below are compared on what actually drives a switch: coverage, deployment fit, pricing, and real reviews from security teams. Independent and vendor-neutral: we never sell rankings.

OpenText Email Security Alternatives and Competitors

OpenText Email Security is a commercial Email Security Platforms tool developed by OpenText Cybersecurity. Security professionals most commonly compare it with Cybonet Mail Secure, Mesh Gateway, ID Agent Graphus, Microsoft Defender for Office 365, and Cloudflare Cloud Email Security. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.

Data verified Jul 2026

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Top OpenText Email Security Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to OpenText Email Security, including their key features and shared capabilities.

Cybonet Mail Secure

Commercial

Email Security Platforms

Email security gateway with anti-spam, AV, sandboxing, and DLP.

Key features: Multi-layer anti-spam and anti-virus engine blocking malicious content at the network perimeter, Behavioral sandboxing module that detonates suspicious email attachments in real time, Data Leakage Protection (DLP) with deep content analysis of 300+ file types, Per-user and per-domain customizable policy rules, Daily traffic reports enabling end users to manage personal whitelists/blacklists and release quarantined mail

View Cybonet Mail Secure|Cybonet Mail Secure alternatives|Compare Cybonet Mail Secure

Commercial

Email Security Platforms

Email security gateway protecting against phishing, BEC, and email-borne threats

Key features: Advanced threat protection against BEC, phishing, ransomware, and brand impersonation, Impersonation detection with sandboxing and URL protection, DMARC, DKIM, and SPF sender verification checks, Cross-tenancy visibility for MSPs to manage multiple customers centrally, Global rules engine to apply policies across all or selected customers

View Mesh Gateway|Mesh Gateway alternatives|Compare Mesh Gateway

ID Agent Graphus

Commercial

Email Security Platforms

AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.

Key features: AI-based detection and quarantine of malicious emails via TrustGraph patented technology, EmployeeShield interactive email warning banners with one-click phishing reporting or safe-marking, Phish911 user phishing reporting mechanism for IT review, Automated email quarantine with instant IT admin alerts, Personal spam filter allowing per-user sender blocking without affecting other recipients

View ID Agent Graphus|ID Agent Graphus alternatives|Compare ID Agent Graphus

Microsoft Defender for Office 365

Commercial

Email Security Platforms

Email and collaboration security for Microsoft 365 environments

Key features: AI-powered sentiment analysis for email filtering, Inline protection against malicious links and attachments in Outlook and Teams, Real-time detonation of attachments and links, Automated BEC attack disruption with user disabling and device isolation, Post-delivery removal of malicious emails

View Microsoft Defender for Office 365|Microsoft Defender for Office 365 alternatives|Compare Microsoft Defender for Office 365

Cloudflare Cloud Email Security

Commercial

Email Security Platforms

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.

View Cloudflare Cloud Email Security|Cloudflare Cloud Email Security alternatives|Compare Cloudflare Cloud Email Security

Commercial

Email Security Platforms

Email security platform with phishing/BEC protection and MDR/XDR integration

Key features: Multi-layered defense with 20+ AI/ML models including NLP, Phishing and BEC attack protection, Email filtering and advanced threat detection, Sender authentication (SPF, DKIM, DMARC), URL protection and cloud sandboxing

View Sophos Email|Sophos Email alternatives|Compare Sophos Email

SorbSecurity Cloud Email Security

Commercial

Email Security Platforms

Cloud-based email security platform protecting against phishing & ransomware

Key features: Anti-spam engine with investigation tools, Cloud sandbox for file analysis, URL protection and scanning, Email archiving with AI-powered search and summarization, Email encryption for message protection

View SorbSecurity Cloud Email Security|SorbSecurity Cloud Email Security alternatives|Compare SorbSecurity Cloud Email Security

Zivver Secure Business Email

Commercial

Email Security Platforms

All-in-one email security platform for threat protection and compliance

Key features: Outbound email content scanning for data leak prevention, Email encryption and secure file transfer, AI-powered inbound threat detection and blocking, DMARC-based domain authentication and spoofing prevention, Automated threat removal without manual intervention

View Zivver Secure Business Email|Zivver Secure Business Email alternatives|Compare Zivver Secure Business Email

All 48 Alternatives & Competitors to OpenText Email Security

Compare

Cybonet Mail Secure

Email security gateway with anti-spam, AV, sandboxing, and DLP.

Email Security Platforms

Compare

Email security gateway protecting against phishing, BEC, and email-borne threats

Email Security Platforms

Compare

ID Agent Graphus

AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.

Email Security Platforms

Compare

Microsoft Defender for Office 365

Email and collaboration security for Microsoft 365 environments

Email Security Platforms

Compare

Cloudflare Cloud Email Security

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.

Email Security Platforms

Compare

Email security platform with phishing/BEC protection and MDR/XDR integration

Email Security Platforms

Compare

SorbSecurity Cloud Email Security

Cloud-based email security platform protecting against phishing & ransomware

Email Security Platforms

Compare

Zivver Secure Business Email

All-in-one email security platform for threat protection and compliance

Email Security Platforms

Compare

Trustifi AI Powered Email Security

AI-powered email security platform for threat detection and compliance

Email Security Platforms

Compare

MDaemon Technologies SecurityGateway

Email security gateway protecting against spam, phishing, viruses & data leaks

Email Security Platforms

Compare

MX Layer Email Security

Cloud-based email security platform with AI-powered threat detection

Email Security Platforms

Compare

Trend Micro Trend Vision One™

AI-powered email and collaboration security platform for threat detection

Email Security Platforms

Compare

Proofpoint Threat Protection

Email security platform with AI-based threat detection and DLP capabilities

Email Security Platforms

Compare

AnubisNetworks Email Security

Email security platform protecting against fraud, malware, and spam threats

Email Security Platforms

Compare

ESET Cloud Office Security

Cloud email security for Microsoft 365 and Google Workspace applications

Email Security Platforms

Compare

TitanHQ SpamTitan

Email security platform blocking spam, phishing, malware, and viruses

Email Security Platforms

Compare

Bitdefender GravityZone Extended Email Security

Cloud-native email security platform with SEG and API-based protection

Email Security Platforms

Compare

Broadcom Symantec Email Security

Enterprise email security platform for cloud and on-premise deployments

Email Security Platforms

Compare

OPSWAT MetaDefender Email Security

Email security platform protecting against phishing, malware, and exploits

Email Security Platforms

Compare

Fortra Email Security & Anti-Phishing

Email security platform protecting against phishing, BEC, and data loss

Email Security Platforms

Compare

TitanHQ Cybersecurity Bundles

Bundled cybersecurity solutions for MSPs and end users with email protection

Email Security Platforms

Compare

MX Layer Outbound Email Filtering

Outbound email filtering platform for spam prevention and IP reputation mgmt

Email Security Platforms

Compare

VIPRE Integrated Email Security (IES)

Email security platform for Microsoft 365 with AI-based threat detection

Email Security Platforms

Compare

API-based email security platform for Microsoft 365 environments

Email Security Platforms

Compare

Cybersentriq MX Email Threat Protection

MX-based email security platform using AI to block spam, phishing & malware

Email Security Platforms

Compare

ConnectWise Email Security

Email security platform with AI threat detection, BEC protection, and DLP

Email Security Platforms

Compare

Vircom Email Security

Email security platform enhanced with multi-tenant mgmt & automation tools

Email Security Platforms

Compare

SmarterTools SmarterMail

Email server with antispam, antivirus, and security features for Linux/Windows

Email Security Platforms

Compare

GLIMPS Email Security for M365

AI-based email security for M365 with phishing, BEC & malware detection.

Email Security Platforms

Compare

Composable email infrastructure platform with threat detection and AI ops.

Email Security Platforms

Compare

Infonaligy Proofpoint Email Security

Managed Proofpoint email security service for phishing & BEC protection.

Email Security Platforms

Compare

Cloud-based anti-spam and antivirus email filtering with AI threat detection.

Email Security Platforms

Compare

SpamTitan for Office 365

Email security layer for M365 with anti-phishing, sandboxing, and DLP.

Email Security Platforms

Compare

SpamTitan Gateway

Email security gateway appliance for spam/malware filtering and mail flow control.

Email Security Platforms

Compare

Unified AI-powered cybersecurity & cyber insurance platform for SMBs.

Email Security Platforms

Compare

AI-Powered Email Security & DMARC Protection

AI-powered DMARC monitoring and email authentication security platform

Email Security Platforms

Compare

Cisco Secure Email Threat Defense

Email threat protection for Microsoft 365 with advanced detection capabilities

Email Security Platforms

Compare

DMARC monitoring platform protecting domains from spoofing and BEC attacks.

Email Security Platforms

Compare

Fortinet FortiMail Email Security

AI-powered email security platform protecting against phishing, BEC, and ATO

Email Security Platforms

Compare

Cellopoint Cloud Email Security Solution

Cloud-based email security platform protecting against phishing, ransomware, BEC

Email Security Platforms

Compare

INKY Behavioral Email Security Platform

Behavioral email security platform protecting inbound, outbound, and internal mail

Email Security Platforms

Compare

TrustLayer Mail

Email security platform with inline threat protection and compliant archiving

Email Security Platforms

Compare

Mimecast Advanced Email Security

Email security platform protecting M365 & Google Workspace from threats

Email Security Platforms

Compare

GreatHorn Email Security

Cloud-native email security platform for phishing detection and response

Email Security Platforms

Compare

xorlab Email Security

AI-driven email security platform for detecting advanced email threats

Email Security Platforms

Compare

Red Sift OnDMARC

Email authentication platform implementing DMARC, SPF, DKIM, and BIMI protocols

Email Security Platforms

Compare

LevelBlue Email Security

Managed email security service protecting against email-based threats

Email Security Platforms

Compare

Abnormal Inbound Email Security

AI-powered email security platform detecting advanced threats via behavioral analysis

Email Security Platforms

Also compare alternatives to:

Cybonet Mail Secure alternatives Mesh Gateway alternatives ID Agent Graphus alternatives Microsoft Defender for Office 365 alternatives Cloudflare Cloud Email Security alternatives Sophos Email alternatives SorbSecurity Cloud Email Security alternatives Zivver Secure Business Email alternatives Trustifi AI Powered Email Security alternatives MDaemon Technologies SecurityGateway alternatives MX Layer Email Security alternatives Trend Micro Trend Vision One™ alternatives

Compare OpenText Email Security with:

OpenText Email Security vs Cybonet Mail Secure OpenText Email Security vs Mesh Gateway OpenText Email Security vs ID Agent Graphus OpenText Email Security vs Microsoft Defender for Office 365 OpenText Email Security vs Cloudflare Cloud Email Security OpenText Email Security vs Sophos Email OpenText Email Security vs SorbSecurity Cloud Email Security OpenText Email Security vs Zivver Secure Business Email

OpenText Email Security Alternatives FAQ

Common questions security professionals ask when evaluating alternatives and competitors to OpenText Email Security.

What are the best alternatives to OpenText Email Security?

The most popular alternatives to OpenText Email Security include Cybonet Mail Secure, Mesh Gateway, ID Agent Graphus, Microsoft Defender for Office 365, and Cloudflare Cloud Email Security. These Email Security Platforms tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

How many alternatives to OpenText Email Security are available?

There are 48 alternatives to OpenText Email Security listed on CybersecTools, all within the Email Security Platforms category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is OpenText Email Security free or commercial?

OpenText Email Security is a commercial Email Security Platforms tool. It requires a paid license or subscription. Both free and commercial alternatives are available for comparison.

What type of tool is OpenText Email Security?

OpenText Email Security is a Email Security Platforms tool within the broader Email & Messaging Security category. It is used by security professionals for email security platforms capabilities and can be compared against 48 similar tools.

Have more questions? Browse our categories or search for specific tools.

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