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Your AEO score measures whether AI search engines (ChatGPT, Claude, Perplexity, Gemini) can actually read your site and cite it in answers. Two-thirds of websites are invisible to them. Phil Zimmermann's Home Page just got measured.
3/10 means Phil Zimmermann's Home Page is currently invisible to AI search. Most AI assistants will not cite your brand when asked about your category. Claiming and applying the fixes below is the fastest way to change that.
Home page for Philip Zimmermann, creator of PGP (Pretty Good Privacy), the most widely used email encryption software in the world
Industry: Technology
philzimmermann.com1
Structured Data
4
Content Structure
5
Entity Clarity
2
E-E-A-T Signals
6
Technical AEO
2
AI Discoverability
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Your full 6-category score breakdown
Exact fixes: robots.txt, schema, llms.txt
AI bot crawls from ChatGPT, Claude, Perplexity, Gemini
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Tech buyers are the most research-intensive shoppers on the internet.
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Scored by Engagemii on July 4, 2026. Methodology: engagemii.com/aeo/methodology
Source URL: https://engagemii.com/aeo/brands/philzimmermann
Cite this score: Engagemii (2026). "AEO Score for Phil Zimmermann's Home Page." Retrieved from https://engagemii.com/aeo/brands/philzimmermann
Licensed under CC BY 4.0. You may reuse this data with attribution: a visible link to engagemii.com.
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