Top 10 Best Email Protection Software of 2026

Proofpoint Email Protection is a leading cloud-native email security platform that defends against advanced threats like phishing, malware, ransomware, business email compromise (BEC), and account takeover attempts. It employs AI, machine learning, behavioral analysis, and a vast global threat intelligence network to deliver precise inline blocking, sandbox detonation, and post-delivery remediation with industry-low false positives. Seamlessly integrating with Microsoft 365, Google Workspace, and other email gateways, it provides comprehensive visibility, automated response, and compliance reporting for enterprise-scale deployments.

Mimecast Email Security is a cloud-native platform that delivers advanced protection against email-based threats like phishing, malware, ransomware, and business email compromise (BEC). It combines AI-driven detection, URL and attachment sandboxing, DMARC authentication, and impersonation protection to safeguard inboxes across Microsoft 365 and Google Workspace environments. Beyond security, it includes email continuity services to maintain access during outages and archiving for compliance.

Microsoft Defender for Office 365 is an advanced email security solution integrated within the Microsoft 365 ecosystem, providing robust protection against phishing, malware, spam, and business email compromise. It features Safe Attachments for sandbox detonation of email files, Safe Links for real-time URL scanning, and anti-impersonation policies to thwart sophisticated attacks. The tool also includes campaign views for threat hunting and Zero-hour auto-purge (ZAP) to automatically remove malicious emails post-delivery.

Cisco Secure Email, formerly known as Cisco Secure Email Gateway, is an enterprise-grade email protection solution that safeguards organizations from spam, phishing, malware, ransomware, and business email compromise (BEC) attacks. Leveraging Cisco Talos threat intelligence and advanced machine learning, it provides real-time threat detection, URL filtering, attachment sandboxing, and data loss prevention (DLP). It supports both on-premises appliances and cloud deployment for scalable protection across hybrid environments.

Barracuda Email Gateway Defense is a cloud-based email security platform designed to protect organizations from spam, phishing, malware, ransomware, and advanced persistent threats. It leverages AI-driven machine learning for real-time threat detection, including impersonation and account takeover prevention, while offering data loss prevention (DLP), email archiving, and continuity services. The solution integrates seamlessly with Microsoft 365 and Google Workspace, providing comprehensive inbound and outbound email protection without requiring on-premises hardware.

Trend Micro Email Security is a cloud-based email protection solution that safeguards organizations against phishing, spam, malware, ransomware, and business email compromise (BEC) attacks. It leverages AI-driven machine learning, sandboxing, and global threat intelligence from the Smart Protection Network to detect and block advanced threats in real-time. The service integrates seamlessly with Microsoft 365, Google Workspace, and on-premises systems, offering centralized management, detailed reporting, and policy enforcement for comprehensive email security.

Broadcom Symantec Email Security, available via symantec.com, is a cloud-based email protection gateway that defends against spam, phishing, malware, ransomware, and advanced threats using AI/ML-driven detection engines. It provides real-time analysis through sandboxing, URL detonation, and behavioral analytics, while integrating seamlessly with Microsoft 365 and Google Workspace. The solution also includes robust Data Loss Prevention (DLP) policies and compliance reporting to prevent data exfiltration and ensure regulatory adherence.

FortiMail is Fortinet's enterprise-grade email security gateway that delivers advanced protection against spam, phishing, malware, ransomware, and business email compromise using AI-driven detection and machine learning. It includes features like inline sandboxing via FortiSandbox, data loss prevention (DLP), content disarm and reconstruction (CDR), email encryption, and archiving for compliance. Deployable as hardware appliances, virtual machines, or cloud-based SaaS, it integrates seamlessly with the Fortinet Security Fabric for unified threat management.

Sophos Email Security is a cloud-based gateway solution that protects organizations from spam, phishing, malware, ransomware, and business email compromise (BEC) threats using AI, machine learning, and real-time threat intelligence. It scans inbound, outbound, and internal emails with dual antivirus engines, rewritten URLs, and sandbox analysis to neutralize sophisticated attacks before they reach inboxes. Integrated into the Sophos Central platform, it provides unified management, detailed reporting, and seamless synchronization with other Sophos security tools for endpoint and network protection.

Abnormal Security is an AI-powered email protection platform designed to detect and prevent advanced threats like phishing, business email compromise (BEC), account takeovers, and malware using behavioral AI analysis rather than traditional signatures or rules. It integrates natively with Microsoft 365 and Google Workspace, providing real-time threat detection, automated remediation, and detailed investigation tools. The platform excels in identifying anomalous user and entity behaviors across email threads, offering comprehensive visibility into email risks for enterprises.