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Top Rated Email Security Software with Email attachment protection - Page 3

Last updated: May 2026

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71 software options

MimeCast Email Security logo

Cloud-based email security and threat intelligence platform

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MimeCast Email Security is a cloud-based secure email gateway designed to help businesses in healthcare, IT, legal, financial services, manufacturing, and other industries protect conversations from malware, spam, ransomware, spear-phishing, and zero-day attacks. Supervisors can monitor, detect and remediate internal threats by inspecting internal emails for malicious attachments, links, or confidential information.

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Graphus logo

Cloud-based email security software

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Graphus is a cloud-based anti-phishing software, which helps protect organizations against email attacks, credential theft, malware, ransomware, identity spoofing, brand impersonation, business email compromise (BEC), account takeover (ATO) and other threats.

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Zix Email Encryption logo

On-premise email encryption software

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ZixMail is an on-premise email encryption software designed to help financial institutions, healthcare providers, and other businesses communicate with internal and external stakeholders through secure emails. The application allows organizations to send encrypted messages to multiple email accounts, authenticate recipient details, and receive timestamp information to track and record the opening time of emails.

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AVG Internet Security Business Edition logo

Cybersecurity platform for small and midsize businesses

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AVG Internet Security Business Edition is a complete protection solution that helps small and midsize businesses keep their systems and devices safe from external threats.

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Zivver logo

Email Security Made Effortless

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Zivver is email security software which helps enterprises transfer business documents and ensure secure e-mail communication. It allows users to retract emails, view risks, causes, and impact of data breaches, configure workflows, and generate custom reports.

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EuropeanMX logo
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Cloud-based anti-spam for incoming and outgoing messages

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Use the cloud redundancy solution EuropeanMX as a reliable spam filter. Our system offers nearly 100% filter accuracy and virtually no false positives. Protect your IP ranges before getting blacklisted. Continuously archive your emails with EuropeanMX to always have a backup of your emails.

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StrongestLayer logo
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AI-native email security platform

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StrongestLayer’s AI Email Security leverages advanced Large Language Models to understand the true intent behind every message, instantly detecting and blocking sophisticated phishing, zero-day exploits, and BEC scams. Seamlessly integrated with Microsoft 365 and Google Workspace.

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MailGuard logo
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Speed Matters. MailGuard stops threats 2- 48hrs faster.

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MailGuard anticipates, predicts and learns from emerging zero-day threats like ransomware, phishing, spear-phishing, Business Email Compromise and similar malicious email-borne attacks, protecting email users from harm.

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FileCap logo
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Cloud-based email security and encryption solution

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FileCap is a secure file-sharing and collaboration solution that lets users send large files over email safely and easily.

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Abusix Mail Intelligence logo
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Cloud-based email security platform

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Abusix Mail Intelligence is an automated, cloud-based protection suite that enables businesses and organizations to protect their sensitive data from cyber-attacks. It protects users' mail servers and customers' inboxes from spam by orchestrating and automating your full security response including detecting malware and virus through machine learning techniques.

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M365 Manager Plus logo
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Management, reporting, auditing, and monitoring of Microsoft

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M365 Manager Plus is a reporting, auditing, monitoring, management, and security solution for Microsoft 365. Designed for businesses of all sizes, it helps users manage Exchange Online, Azure AD, Microsoft Teams, OneDrive for Business, and other services from a centralized dashboard.

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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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MeSign logo
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End-to-End encryption and digital signature app for emails.

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Provides email encryption, digital signing and timestamping service for your corporate emails.

Auto-configure email certificates, encrypt email message automatically by default with S/MIME standard.

Cloud and on-premise key management are both supported.

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iQ.Suite aaS logo
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Enterprise email management & security solution for M365

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iQ.Suite aaS is a cloud-based enterprise email management and security solution for companies using Microsoft 365. It offers a comprehensive set of features including content-driven encryption, insider threat detection, wrong recipient protection, and more. iQ.Suite aaS offers malware and spam detection to minimize risk and secure emails from unauthorized access. Additionally, to ensure company policies are met, this solution can be used to apply business policies to email communications.

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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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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.

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Advanced Threat Protection logo
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Ransomware attack, phishing & CEO fraud protection software

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Hornetsecurity's Advanced Threat Protection software is designed to detect and protect enterprises from targeted attacks, ransomware, CEO & phishing fraud with features including a sandbox engine, URL scanning & rewriting, freezing, targeted fraud forensics, and more

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mxHERO for Legal QuickStart logo
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Email security & productivity designed for legal firms

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Protect outbound email attachments by automatically replacing them with secure links to your existing cloud storage service. No end-user effort or downloads required. Works uniformly across all devices. Minimize your risk to external email breaches and email mishandling.

Read more about mxHERO for Legal QuickStart

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Agari Secure Email Cloud logo
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Email security and cybersecurity software

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Agari Secure Email Cloud is an email security and cybersecurity software that helps businesses in finance, healthcare, retail, legal, and IT industry segments identify and prevent spear phishing, account takeovers, and email compromise-based attacks. With the incident response functionality, staff members can prioritize tasks and conduct attachments, URLs, and sender forensics-based investigations.

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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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Topsec Managed Email Security logo
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Software for managing and securing emails

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Topsec's Managed Email Security service is a cloud-based solution designed to safeguard your organization's email system from a wide range of cybersecurity threats. With advanced email threat detection, targeted threat protection, and real-time monitoring, Topsec ensures that your critical data remains secure and your email continuity is maintained.

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