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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DMARC implementation & monitoring tool to prevent domain spoofing attacks
Secures Microsoft Teams, SharePoint & OneDrive from malware and phishing
Email encryption software using FIPS 140-2 compliant modules and RSA keys
DMARC monitoring tool for email deliverability and brand protection
Filters bulk and graymail to reduce email distractions and boost productivity
Email encryption solution for securing sensitive data in email communications
Outbound email security solution preventing data loss and insider threats
Cloud email security platform for inbound/outbound threat detection & DLP
End-to-end email encryption with DLP and access controls for Microsoft 365
AI-powered anti-phishing solution for Microsoft 365 with behavioral detection
AI-based phishing protection for mobile devices across SMS, email, and apps
Outlook add-in for sending personalized bulk emails via mail merge
AI-powered email encryption solution for compliance with HIPAA, FINRA, FERPA
Outlook add-in preventing misaddressed emails & data leakage via pre-send checks
Email security platform for Microsoft 365 with AI-based threat detection
Cloud-based email archiving solution for compliance and e-discovery
Detects malicious content and URLs in Microsoft Teams and Slack messages.
Detects and remediates email account takeovers using behavioral AI analysis.
Cloud-based anti-spam solution filtering inbound email threats
Secure email platform with encryption, DLP, and policy automation
Email DLP solution scanning inbound/outbound emails for data leak prevention
Email compliance and archiving solution with DLP and threat protection
Outbound email filtering platform for spam prevention and IP reputation mgmt
Managed service for email phishing monitoring and incident response
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.
