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Email Security Software with Email Attachment Protection (2026) - Page 3

Last updated: March 2026

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71 software options

NoID logo

We protect email, what you write, read and attach

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NoID is a cloud-based secure email encryption platform. NoID SecureEmail delivers emails from A to B encrypted "On send", and decrypted "On receive". It runs parallel to the existing email solution without any requirement to change any part of it.

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DMARC Monitor logo

Cloud-based email validation and list cleaning software

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DMARC Monitor is a cloud-based email validation and list cleaning software that helps secure business emails and prevent domain spoofing or phishing by monitoring multiple domains.

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Ericsson NetCloud Manager logo

Manage network connectivity and security from anywhere.

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NetCloud SASE email security protects against phishing, malicious attachments and malware. Websites launched from emails are isolated to keep malware away, attachments are sanitized with CDR, and unknown sites are opened as read-only to block credential entry.

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Heimdal Email Security logo

Email Protection in a Redefined Spam Filter

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Heimdal Email Security is an email protection solution that combines advanced spam filtering with robust malware prevention through a multitude of modern technologies.

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KDMARC logo

Keep The Spoofers Away From Your Email Domain

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TDMARC, by Threatcop, enhances email security with anti-spoofing measures, ensuring domain protection and boosting deliverability. It filters spoofed emails, maintains domain reputation, and offers easy setup for SPF, DKIM, and DMARC protocols.

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MeSign logo
(0)

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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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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mxHERO for Legal QuickStart logo
(0)

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.

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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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MailGuard logo
(0)

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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EuropeanMX logo
(0)

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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iQ.Suite aaS logo
(0)

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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FileCap logo
(0)

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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FileCap logo
(0)

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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EuropeanMX logo
(0)

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.

Read more about EuropeanMX

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LogValid logo
(0)

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
(0)

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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mailbox logo
(0)

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
(0)

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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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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FactorX.ai logo
(0)

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.

Read more about FactorX.ai

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