Email Security Tools
Email security solutions for protecting against phishing attacks, business email compromise, spam, and email-borne threats.
Browse 253 email security tools
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Outlook add-in for end-to-end email encryption with recipient auth & revoke.
Encrypted email platform with recipient verification, tracking, and revocation.
Real-time email threat blocking via RBL/DNSBL blocklists for mail servers.
Email threat protection using blocklists, blocking 99.6%+ of email threats.
Workspace security platform for detecting phishing and impersonation attacks
AI-powered email security with phishing detection and employee training
Phishing threat mgmt platform for reporting, analyzing & responding to threats
Monitors domains across 100+ blacklists and alerts when domains are listed
End-to-end email encryption solution with centralized policy management
AI-native email security platform detecting phishing and BEC attacks
Cloud-based email security service protecting against phishing, malware & BEC
AI-powered email security platform protecting against phishing, BEC, and ATO
Managed email filtering service with threat detection and spam prevention
Comprehensive email security & human risk mgmt platform with AI-powered protection
Anti-spearphishing solution protecting orgs from targeted email attacks
Cloud-based email archiving solution with unlimited storage and retention
DMARC visualization tool for email domain protection and authentication
Real-time web filtering solution for educational institutions
High assurance email guard for NATO with EAL4+ certification and DLP
HIPAA-compliant email encryption for Google Workspace and Microsoft 365
Email encryption service with automated delivery and compliance tracking
Email server with antispam, antivirus, and security features for Linux/Windows
Email Security Specializations
253 tools across 5 specializations · 19 free, 234 commercial
Anti-Phishing
Anti-phishing tools and email security gateways that detect and block phishing emails, malicious links, and social engineering attacks.
Business Email Compromise Protection
BEC protection solutions that prevent CEO fraud, wire transfer fraud, and advanced email-based financial crimes.
Email DLP
Email data loss prevention tools that monitor outbound emails for sensitive data and prevent accidental or malicious data leakage.
Email Security Tools FAQ
Common questions about Email Security tools, selection guides, pricing, and comparisons.
Email security gateways (SEGs) sit in front of your mail server, filtering emails before delivery using MX record redirection. API-based email security integrates directly with email platforms like Microsoft 365 or Google Workspace via APIs, analyzing emails post-delivery and retroactively removing threats. API-based solutions are better at catching sophisticated phishing and BEC attacks that bypass gateway reputation checks.
BEC attacks use social engineering rather than malware, making them invisible to traditional email filters. Protection requires: AI-based email analysis that detects tone and behavioral anomalies, DMARC/DKIM/SPF authentication to prevent domain spoofing, executive impersonation detection, out-of-band verification for financial requests, and security awareness training focused on recognizing social engineering tactics.
Microsoft Defender for Office 365 provides baseline protection including anti-phishing, safe attachments, and safe links. However, independent tests consistently show that dedicated third-party email security tools catch 10-20% more sophisticated threats, particularly targeted phishing, zero-day payloads, and BEC attacks. Most security teams layer a third-party solution on top of Microsoft native protections.
