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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Managed Proofpoint email security service for phishing & BEC protection.
Email gateway that localizes personal data in emails to meet data residency laws.
AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.
Email scanning service that analyzes forwarded suspicious emails for threats.
Composable email infrastructure platform with threat detection and AI ops.
AI-based email security for M365 with phishing, BEC & malware detection.
Encrypted email solution for GDPR-compliant sending via Outlook or browser.
AI-based workflow detecting suspicious email rule changes tied to BEC attacks.
Managed anti-phishing service combining AI detection with human analyst review.
Free anti-phishing tool for M365 that deploys via a custom CSS file in Entra.
White-label branding layer for Echoworx's email encryption platform.
AI-driven platform to optimize, assess, and automate Mimecast email security controls.
S/MIME certificates for end-to-end email encryption and signing.
Email security gateway with anti-spam, AV, sandboxing, and DLP.
Carrier-grade outbound spam & botnet detection solution for ISPs.
End-to-end Gmail encryption with user-controlled keys and trusted contacts.
Cloud-based email security platform with DLP, encryption, and archiving.
Cloud-native API-based email & collaboration security with CDR for SaaS.
Free encrypted email tool with Q&A recipient auth for individuals.
Automated bulk secure email encryption & delivery for enterprise orgs.
AES-256 encrypted email add-on for M365 with auth & revocation.
Enterprise secure email gateway with AES-256 encryption & recipient auth.
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.
Yes. Out of 24 email security tools listed on CybersecTools, 2 are free and 22 are commercial. Free tools work well for small teams, testing, and budget-conscious organizations. Commercial tools typically add enterprise features, dedicated support, and SLA guarantees.
