Sublime Security Sublime Rules is a free detection engineering solution by Sublime Security. Zivver Secure Business Email is a commercial email security platforms solution by Zivver. Features, integrations, deployment and the company behind each one, side by side.
Open-source detection rules for email attacks like BEC, phishing, and malware
All-in-one email security platform for threat protection and compliance
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Based on what each listing shows: deployment, company size, price and open source.
Sublime Security Sublime Rules fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.
Zivver Secure Business Email fits if you want a cloud product.
Common questions when comparing Sublime Security Sublime Rules vs Zivver Secure Business Email for detection engineering.
Sublime Security Sublime Rules: Open-source detection rules for email attacks like BEC, phishing, and malware, built by Sublime Security.
Zivver Secure Business Email: All-in-one email security platform for threat protection and compliance, built by Zivver.
The table above shows where their features, integrations, deployment and company size fit differ.
Sublime Security Sublime Rules is open-source. Zivver Secure Business Email is made by Zivver. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
In part. Sublime Security Sublime Rules and Zivver Secure Business Email are not in the same category on CybersecTools. Key differences: Sublime Security Sublime Rules is Free while Zivver Secure Business Email is Commercial. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-02
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