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Email Security Software with Whitelisting/Blacklisting (2026) - Page 3

Last updated: April 2026

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70 software options

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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Retarus logo

Your Communications Need More Than Just the Best

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The Retarus Communications Platform helps you secure, modernize, consolidate, and cloudify existing communication infrastructures. Make your communications platform work better so you can work better: with Retarus.

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mxHERO Email Attachment Protection logo

Email Security to protect data sent by email attachments

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Greatly improve your data security by automatically delivering email attachments as self-expiring cloud storage links. Attachments auto-uploaded to your cloud storage and replaced with expiring links (7, 14, 30 days). No end-user effort or downloads required.

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Barracuda Incident Response logo

Email security and digital forensics software

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Barracuda Forensics and Incident Response is an email security software designed to help businesses identify and manage various external email attacks including ransomware or phishing emails. The application enables organizations to monitor security threats, block malicious emails, and automate workflows.

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Sentry Email Defense Service logo

Cloud-based email protection platform

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Sentry Email Defense Service (EDS) is a cloud-based platform that helps businesses ensure protection against spam, virus, phishing links, DDoS, ransomware, and various other threats. Features include real-time reporting, encryption, data leakage protection, SMTP logs, and email archiving.

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Beeble logo

Private Encrypted Email and Cloud Without Third Party Access

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Beeble is secure email and cloud storage with end-to-end encryption. Complete privacy, no ads, and business-grade data protection.

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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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DMARCTrust logo
(0)

Email authorization monitoring & DMARC compliance platform

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DMARCTrust provides email authentication monitoring through automated DMARC report processing and analysis. The platform identifies all services and IP addresses sending emails on behalf of a domain, tracks SPF and DKIM authentication pass rates, and monitors DNS records for unauthorized changes every five minutes. It includes a dedicated reporting address, automated data collection from major email providers, and alerts for authentication failures and configuration issues.

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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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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
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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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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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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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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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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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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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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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M365 Manager Plus logo
(0)

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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StartMail logo
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Email platform for end-to-end email encryption

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StartMail is a privacy-first email service that keeps your inbox safe. It is designed for individual and business use. StartMail users can create an unlimited number of email aliases at no extra cost to mask their real email. Custom email addresses are available for businesses.

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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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