Perimeter 81 vs Fortinet: Email Security Comparison (2026)
An independent side-by-side comparison of Perimeter 81 and Fortinet for email security buyers — pricing, features, integrations, and how often each is cited by major AI engines.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask email security questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Too early to call — probes still building data.
ChatGPT
Perimeter 81
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No data yet
Fortinet
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No data yet
Perplexity
Perimeter 81
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No data yet
Fortinet
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No data yet
Gemini
Perimeter 81
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No data yet
Fortinet
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No data yet
Claude
Perimeter 81
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No data yet
Fortinet
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No data yet
Copilot
Perimeter 81
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No data yet
Fortinet
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No data yet
Scale:NoneLowFairStrongExcellent
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
Perimeter 81
Feature data is being indexed.
Fortinet
Feature data is being indexed.
When to choose Perimeter 81
Choose Perimeter 81 if your team prioritizes its strengths over Fortinet's. Full guidance populates as Perimeter 81's feature data is indexed.
When to choose Fortinet
Choose Fortinet if your team prioritizes its strengths over Perimeter 81's. Full guidance populates as Fortinet's feature data is indexed.