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Sublime Security

Sublime Security — Open-source email security platform with MQL-based detection rules for BEC, phishing, and malware analysis.

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Our Verdict

A refreshingly transparent email security platform for teams that want to own their detection logic.

Pros

  • Open source core lets teams audit detection logic
  • MQL rule language is expressive and readable
  • Active rule-sharing community ships detections fast
  • Self-hostable for maximum data control

Cons

  • Self-hosting still requires ops effort to run well
  • Smaller brand footprint versus Abnormal or Proofpoint
  • Cloud version pricing not always public
  • Requires detection-engineering mindset to tune
Best for: Security engineers who want to read, write, and own their email detection rules. Not for: Teams wanting fully black-box AI-driven email protection with zero tuning responsibility.

When to Use Sublime Security

Good fit if you need

  • MQL-based phishing detection rules for custom email threats
  • BEC and spear-phishing detection with open-source rules
  • Email malware analysis via attachment sandboxing
  • Community rule sharing for emerging email threat detection
  • Self-hosted email security for privacy-sensitive organizations

Lock-in Assessment

Low 5/5
Lock-in Score
5/5

Sublime Security Pricing

Pricing Model
free
Free Tier
Yes
Entry Price
Enterprise Available
No
Transparency Score

Beta — estimates may differ from actual pricing

1,000
1001K10K100K1M

Estimated Monthly Cost

$25

Estimated Annual Cost

$300

Estimates are approximate and may not reflect current pricing. Always check the official pricing page.

Community Discussion

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