Best Email Security Software in 2026

Proofpoint Email Protection provides comprehensive security against a wide range of email-borne threats, including malware, spam, phishing, and advanced persistent threats. It leverages a multi-layered approach with advanced analytics and intelligence to protect organizations from sophisticated attacks.

Mimecast offers a cloud-based email security platform that combines advanced threat protection, data archiving, and email continuity. It helps organizations secure their email, prevent data loss, and maintain email access during outages, all managed from a single console.

Trellix Email Security (formerly FireEye) provides advanced threat detection and prevention for email. It utilizes machine learning and behavioral analysis to identify and block sophisticated attacks, including zero-day exploits and polymorphic malware, before they reach end-users.

Microsoft Defender for Office 365 provides advanced protection against phishing, spam, malware, and other threats in email and collaboration tools. It integrates natively with Microsoft 365 services, offering robust security features like Safe Attachments and Safe Links for enhanced protection.

Barracuda Email Security Gateway offers a robust solution for protecting organizations from email-borne threats. It combines spam and virus blocking, data loss prevention, encryption, and archiving capabilities to ensure secure and compliant email communication for businesses of all sizes.

Forcepoint Email Security provides robust protection against advanced email threats, including phishing, malware, and ransomware. It leverages behavioral analytics and cloud-based intelligence to detect and prevent attacks, protecting sensitive data and ensuring regulatory compliance.

Cisco Secure Email offers comprehensive protection against a wide range of email threats, including spam, malware, phishing, and business email compromise (BEC) attacks. It uses advanced threat detection, data loss prevention (DLP), and encryption to secure email communications.

Google Workspace Security provides integrated email security for Gmail users, offering protection against spam, phishing, and malware. It leverages Google's AI and machine learning capabilities to detect and block threats, ensuring a secure communication environment within Google Workspace.

Abnormal Security provides an AI-native cloud email security platform focused on stopping advanced attacks like business email compromise (BEC), phishing, and malware that bypass traditional defenses. It uses behavioral AI to understand user and organizational behavior and detect anomalies.

Perimeter 81 Email Protection offers a secure email gateway as part of its broader Secure Access Service Edge (SASE) platform. It provides protection against spam, phishing, and malware, ensuring secure communication and data loss prevention for modern, distributed workforces.

Check Point Harmony Email & Collaboration provides comprehensive protection against advanced email threats, including phishing, malware, and business email compromise (BEC). It secures SaaS applications and collaboration tools, ensuring data integrity and user safety across the digital workspace.

Tessian uses machine learning to understand human behavior and prevent advanced email threats such as accidental data loss, phishing, and insider threats. It protects against sophisticated attacks that bypass traditional security solutions, focusing on the 'human layer' of security.

Cyren Email Security offers a comprehensive cloud-native solution for inbound and outbound email protection. It provides real-time threat intelligence, anti-spam, anti-malware, and phishing protection, ensuring secure communication and business continuity against evolving threats.

Sophos Email is a cloud-based security solution that leverages artificial intelligence to protect against a wide range of email threats. It offers advanced anti-phishing, anti-ransomware, and imposter protection, integrating seamlessly with other Sophos security products for a layered defense.

Mailwasher Enterprise Server provides powerful, on-premise spam filtering and virus protection for businesses. It allows users to preview and delete unwanted emails before they reach their inbox, offering a high degree of control and customization over email flow and security.