Productivity
List Detective
Last updated 2026-07-05 · benchmark measured 2026-08-09 — deterministic & reproducible
Free browser-based tool that checks email lists for deliverability issues.
Is List Detective production-ready?
Legit.Show scores List Detective 70 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on List Detective (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 92/100
- Accessibility — 94/100
- Security — 25/100
- Privacy — 25/100
- Reliability — 92/100
- Standards — 92/100
- Discoverability — 72/100
What we measured
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 1942 ms to first byte.
- Returns a proper 404 for unknown routes.
- 0 of 0 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: structured data, sitemap.
Who it's for
Email marketers · ESP users · List managers · Salesforce Marketing Cloud users · Anyone managing email campaigns
Pricing
Free
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