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Sublime Security Sublime Rules is a free email security platforms tool by Sublime Security. Sublime Platform is a free email security platforms tool. Compare features, ratings, integrations, and community reviews side by side to find the best email security platforms fit for your security stack.
CST VerdictBased on our analysis of core features, here is our conclusion:
Security teams running Microsoft 365 or Google Workspace who need to stop BEC and credential phishing without adding another paid platform should start with Sublime Security Sublime Rules. The detection logic is built on Message Query Language rules that actually catch HTML smuggling and OneNote malware where signature-based filters fail, and you get DLP discovery rules included at zero cost. Skip this if your org needs automated response or investigation workflows; Sublime Rules is detection-only and assumes you have a process to act on what it finds.
Security teams with limited budgets or those building custom email detection logic will find real value in Sublime Platform; its Message Query Language lets you write behavioral rules that catch BEC and credential phishing variants off-the-shelf tools miss. The free, open-source model means no licensing friction and full transparency into detection logic, critical for teams that need to audit or customize their email stack. Skip this if you need native integration with your existing EDR or require managed threat hunting; Sublime is detection-focused and requires your team to own the tuning.
Open-source detection rules for email attacks like BEC, phishing, and malware
A free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing, utilizing Message Query Language (MQL) for behavior description.
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Common questions about comparing Sublime Security Sublime Rules vs Sublime Platform for your email security platforms needs.
Sublime Security Sublime Rules: Open-source detection rules for email attacks like BEC, phishing, and malware. built by Sublime Security. headquartered in United States. Core capabilities include Detection rules for email attacks, Business email compromise (BEC) detection, Credential phishing detection..
Sublime Platform: A free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing, utilizing Message Query Language (MQL) for behavior description..
Both serve the Email Security Platforms market but differ in approach, feature depth, and target audience.
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