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Email Security Software with Threat Protection (2026) - Page 4

Last updated: March 2026

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81 software options

mailbox logo
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Secure encrypted email and workspace platform

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Mailbox provides a comprehensive digital workspace combining secure email, cloud storage, video conferencing, and office tools in one integrated platform. The service stores data in certified German data centers with consistent encryption during storage and transmission, ensuring GDPR compliance and enhanced security. Users benefit from spam-free inboxes, collaborative tools, and an infrastructure powered by renewable energy.

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Stalwart logo
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Open-source mail and collaboration platform

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Stalwart Mail Server is an open-source email platform combining collaboration tools and security features in one unified solution.

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FactorX.ai logo
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AI-Powered Email Security for Modern Threats

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FactorX.ai is an AI-native email security platform designed for Microsoft 365 and Gmail. It uses real-time threat detection and behavioral AI to stop phishing, malware, BEC, and ransomware before they hit the inbox.

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Palisade logo
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Email security software

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Palisade is an AI-powered DMARC platform that automates the implementation of DMARC to help users stop landing in spam and get their verified email checkmark. The platform integrates with over 800 third-party apps and features smart DMARC capabilities, email threat detection, and expert human support to improve email deliverability and security.

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LogValid logo
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Real-time email verification solution

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LogValid enhances email security by verifying the authenticity of email addresses in real time. It detects and removes invalid, disposable, and spam emails, protecting your system from fraud, phishing, and other security threats.

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Fortra’s DMARC Protection logo
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Software for protection from spoofing and phishing attacks

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Agari Brand Protection is a simple anti-phishing solution that helps enterprises prevent and recover from email spoofing attacks. Businesses can block phishing attacks with DMARC, SPF, DKIM, and other email authentication services.

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