Why Guardian Digital?

AI-Powered Cost Effective & Scalable Business Email Security Services

EnGarde Cloud Email Security: Comprehensive Email Security for Every Environment

Devotion to our customers is the foundation of everything we do

We are innovative open-source protection pioneers

Engineers of next-generation business protection solutions

Guardian Digital understands that security is not just an IT issue or an afterthought — it's a boardroom issue that’s fundamental to today's business success.  Guardian Digital has a deep understanding of the threats that companies face today and the circumstances that can result from just one security breach. It's a rapidly growing concern for any size company in any industry, and real-time gateway security is the answer.


Our Secure Services Gateway Solution

For the last two decades, our company has developed and implemented cutting-edge cyber solutions using our flexible and cost-effective open-source platform.  These efforts have been employed to protect some of the largest companies in the world. Now, we’re using that experience to focus exclusively on secure email gateway protection.

Leveraging the benefits of open source development, contemporary cloud technologies, and decades of combined experience protecting enterprises, Guardian Digital engineers have created EnGarde Cloud Email Security to be a cloud security gateway that's unparalleled by any other in the industry.

Guardian Digital fully manages EnGarde and provides comprehensive support to ensure the most effective protection against the most advanced threats. EnGarde gives you not only exceptional protection from the latest phishing attacks, but also the monitoring and policy development expertise by Guardian Digital engineers of your specific system in real-time. We're helping you every step of the way.

Preventing Threats

The global threat landscape is constantly changing.  High-tech hackers use increasingly sophisticated and coordinated attacks on business systems, including botnets, blended malware threats, and zero-day and other advanced targeted attacks.

Organizations deserve an advanced gateway security system that will provide protection from even the most hostile networks. They also need this solution to be scalable and affordable.

The EnGarde Cloud Email Security is the answer. It provides real-time intelligence, comprehensive protection from known and unknown threats, effective defenses against viruses, and protection against phishing and spoofing attacks. Since open-source software is adaptable by its very nature, the advanced machine-learning technology inherent to EnGarde detects and combats new email spam threats in real time.


Development Without Limits

Open Source- a transparent, community-powered development model- has the potential to benefit businesses and consumers across all industries, giving rise to some of the most effective and secure software, products and solutions on the market. 

GuardianDigital recognizes this. And for the past 20 years we have embraced Open Source to create and provide customers threat-ready, secure business email protection for businesses of every size. 

Real-Time Protection, Real-Time Results.
Stay Ahead of Emerging Threats with Guardian Digital EnGarde Cloud Email Security

EnGarde’s Key Product Features and Benefits

Maintenance free, easy administration, secure updates

Ease of Use

Our sophisticated and user-friendly web administration system provides a consistent and reliable means of managing all standard tasks, including software updates.

Maintenance free, easy administration, secure updates

Reduced Start-up Costs

Our typical user gets started in less than half the time and uses fewer resources because we do all the hard work.

Maintenance free, easy administration, secure updates

Reduced On-going Costs

The reliability of our software reduces the time and expertise required to manage the system and any associated upgrades and integrations, making it a more cost-effective solution than proprietary software.

Maintenance free, easy administration, secure updates


Guardian Digital software is easily configured to support a small office with limited resources or one with thousands of users. Built on industry standards, EnGarde can be easily adapted to best serve your email system.

Maintenance free, easy administration, secure updates

100% Open Source Software

EnGarde is built using the open-source development model, combined with the security and internet expertise of Guardian Digital engineers.

Maintenance free, easy administration, secure updates

Engineered Security

Built with security integrated into its design rather than bolted on afterwards, or “patched on” in pieces, EnGarde is engineered with email security as its primary concern.

Maintenance free, easy administration, secure updates

Global Presence

Our security solutions have spanned the globe — we’ve worked with enterprises here in the United States and abroad.

Maintenance free, easy administration, secure updates

Guardian Digital Expertise

We’ve developed a revolutionary approach to standard internet connectivity solutions, and now we’re taking that knowledge and focusing on email security solutions for businesses like yours.

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