Proofpoint Core Email Protection vs Sublime Security Sublime Rules: side-by-side comparison (2026)

Proofpoint Core Email Protection: Email security platform with AI-based threat detection and DLP capabilities, built by Proofpoint.

Sublime Security Sublime Rules: Open-source detection rules for email attacks like BEC, phishing, and malware, built by Sublime Security.

The table above shows where their features, integrations, deployment and company size fit differ.

Proofpoint Core Email Protection is made by Proofpoint. Sublime Security Sublime Rules is open-source. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

In part. Proofpoint Core Email Protection and Sublime Security Sublime Rules are not in the same category on CybersecTools. Key differences: Proofpoint Core Email Protection is Commercial while Sublime Security Sublime Rules is Free. Use the table above to see where features, deployment and company size fit differ.