Best Email Security Software for Windows

Guardz is the unified cybersecurity platform purpose-built for MSPs. We consolidate the essential security controls, including identities, endpoints, email, awareness, and more, into one AI-native framework designed for operational efficiency. Our identity-centric approach connects the dots across vectors, reducing the gaps that siloed tools leave behind so MSPs can see, understand, and act on user risk in real time. Backed by an elite research and threat hunting team, Guardz strengthens detection across environments, turning signals into actionable insights. With 24/7 AI + human-led MDR, Guardz utilizes agentic AI to triage at machine speed while expert analysts validate, mitigate, and guide response, giving MSPs scalable protection without adding headcount. Our mission is simple: give MSPs the scale, confidence, and clarity they need to stay ahead of attackers and deliver protection to every SMB they serve.

ESET Protect Advanced is a comprehensive cybersecurity solution designed for businesses of all sizes. It offers advanced endpoint protection against ransomware, zero-day threats, and sophisticated attacks with ESET LiveSense technology. It includes full disk encryption for legal compliance and data protection. The solution features proactive cloud-based threat defense using adaptive scanning, machine learning, cloud sandboxing, and behavioral analysis to prevent new threats. Mobile threat defense secures Android and iOS devices with anti-malware, anti-theft, and mobile device management. It also provides cloud app protection, mail server security, and vulnerability and patch management. Extended detection and response (XDR) enhances threat detection and response, while multi-factor authentication adds security. The solution offers single-pane-of-glass remote management for visibility into threats and users, along with advanced reporting and custom notifications.

Heimdal® Endpoint Detection and Response is our proprietary multi-solution service providing unique prevention, threat-hunting, and remediation capabilities. It combines some of the most advanced threat-hunting technologies: - Next-Gen Antivirus - Privileged Access Management - Application Control - Ransomware Encryption Protection - Patch & Asset Management - Email Security - Remote Desktop - Threat Prevention ( DNS based ) - Threat Hunting & Action Center With 9 modules working together seamlessly under one convenient roof, all within one agent and one platform, Heimdal Endpoint Detection and Response grants you access to all the essential cybersecurity layers your business needs to protect itself against both known and unknown online and insider threats. Our state-of-the-art product empowers you to quickly and effortlessly respond to sophisticated malware with stunning accuracy, protecting your digital assets and your reputation in the process as well.

All-in-one security with 1-click resolve that protects your entire business. A unified threat protection solution designed to bring you cutting-edge, holistic defense with zero drain on your IT resources. Our AI anticipates risk, then proactively identifies and addresses issues automatically, saving you valuable time. Keplersafe is the complete solution that makes it easy to be compliant for mid-market businesses with any sized IT or security team by helping to ensure you're protected according to best practices and accepted industry standards. The Keplersafe platform is built on the principle of holistic, non-disruptive security. Our platform employs innovative AI technology and behavioral analysis to assist businesses in staying secure and compliant, without IT teams having to worry, investigate or fix issues themselves. Keplersafe is based in New York City, with Sales and R&D offices around the globe.

ESET PROTECT Complete is a comprehensive cybersecurity solution designed to safeguard business endpoints, cloud applications, and email systems. It offers advanced protection against ransomware and zero-day threats through cloud-based sandboxing technology and machine learning-driven detection. It includes full disk encryption capabilities, aiding compliance with data protection regulations. ESET PROTECT Complete also provides robust security for mobile devices, file servers, and email servers, incorporating anti-malware, anti-phishing, and anti-spam measures. Its centralized, cloud-based management console allows for streamlined deployment, monitoring, and response to security incidents across the organization. Additional features include vulnerability and patch management, ensuring that software vulnerabilities are promptly identified and addressed.

ESET PROTECT Elite is an enterprise-grade cybersecurity solution that integrates extended detection and response with comprehensive multilayered protection. It offers advanced threat defense using adaptive scanning, machine learning, cloud sandboxing, and behavioral analysis to prevent zero-day threats and ransomware. The platform includes modern endpoint protection for computers and smartphones, server security for real-time data protection, and mobile threat defense. It also features full disk encryption, helping organizations comply with data protection regulations. ESET PROTECT Elite provides robust email security, including anti-phishing, anti-malware, and anti-spam technologies, along with cloud app protection for Microsoft 365 and Google Workspace. Vulnerability and patch management capabilities allow for automatic tracking and patching of vulnerabilities across all endpoints.

Cynet empowers MSPs and MSSPs with a comprehensive, fully managed cybersecurity platform that consolidates essential security functions into a single, easy-to-use solution. Cynet simplifies cybersecurity management, reduces operational overhead, and lowers costs by eliminating the need for multiple vendors and complex integrations. The platform provides multi-layered breach protection, offering robust security for endpoints, networks, and SaaS/Cloud environments. Cynet’s advanced automation streamlines incident response, ensuring rapid detection, prevention, and resolution of threats. Additionally, the platform is backed by Cynet’s 24/7 Security Operations Center (SOC), where the expert CyOps team delivers around-the-clock monitoring and support to safeguard all client environments. By partnering with Cynet, You can offer your clients advanced, proactive cybersecurity services while optimizing efficiency. Discover how Cynet can transform your security offerings today.

BUFFERZONE provides a patented containment and disarming solution that defends endpoints against advanced malware and zero-day attacks while maximizing user and IT productivity. By isolating potentially malicious content coming from browsers, email and removable media, BUFFERZONE defends individuals and organizations from advanced threats that evade detection. BUFFERZONE disarms content for securely transferring it from the container to the native endpoint and secure network zones, and provides critical intelligence for enterprise-wide security analytics. Easy to deploy and configure, BUFFERZONE is a lightweight solution that provides cost-effective containment for up to thousands of endpoints.

SecurityHQ is a world leading independent Managed Security Service Provider (MSSP), that detects, and responds to threats, instantly. As your security partner, we alert and act on threats for you. Gain access to an army of analysts that work with you, as an extension of your team, 24/7, 365 days a year. Receive tailored advice and full visibility to ensure peace of mind, with our Global Security Operation Centres. Utilize our award-winning security solutions, knowledge, people, and process capabilities, to accelerate business and reduce risk and overall security costs. Most Popular Services: Managed Detection and Response (MDR) Endpoint Detection and Response (EDR) Managed Extended Detection and Response (XDR) Vulnerability Management Services Managed Firewall Digital Forensics & Incident Response Managed Network Detection and Response (NDR) Penetration Testing CISO as a Service