Legit.Show measured Skim's Security frame at 25/100. No Content-Security-Policy and no HSTS. Served over HTTPS with a valid certificate.

How does Legit.Show measure Skim?

Legit.Show scores seven frames — Performance, Accessibility, Security, Privacy, Reliability, Standards and Discoverability — deterministically from the public surface (URL, HTTP headers, real Lighthouse), with no LLM in the scoring path. See legit.show/methodology.

Productivity

Skim

Last updated 2026-07-21 · benchmark measured 2026-09-13 — deterministic & reproducible

Skim is a free, open-source AI email client for Windows built on a native Rust core.

83/100

7/7 frames

Top 35% of 15,379 measured · #15 of 33 in email client

Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.

Checked 2026-09-13 · scores move as sites change

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To cite this score: legit.show/s/skim-tech-com/2026-09-13. That address never changes; this page moves with every re-measure.

Legit.Show scored Skim 83/100 on 2026-09-13, measured across all 7 frames from its public surface. legit.show/s/skim-tech-com/2026-09-13

Is Skim production-ready?

Legit.Show scores Skim 83 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Skim (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 73/100
Accessibility — 97/100
Security — 25/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 100/100
How this compares across the catalogue: The Privacy Gap
Reliability — 92/100
Standards — 92/100
Discoverability — 100/100

What we measured

No Content-Security-Policy and no HSTS.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 161 ms to first byte.
Returns a proper 404 for unknown routes.
0 of 0 sampled routes reachable.
Has a reachable privacy policy.
Sets cookies / loads scripts with no consent prompt.
Discoverable: structured data, sitemap, OpenGraph image, canonical URL.

Who built it

justin cesman

Who it's for

Windows users · Email power users · Privacy-conscious professionals · Developers · People seeking lightweight alternatives

Pricing

Free and open source (MIT license); optional AI features use your own API key billed directly by provider

Sources and updates

Description: Taken from skim-tech.com's own website on 2026-07-21.
Operator: Skim contributors, as named in skim-tech.com's terms, privacy page or footer.
Benchmark: Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-13.

Put together from public information, without Skim's involvement. If anything here is wrong, tell us and a person will check it.

Visit Skim → · Alternatives to Skim → · How this was measured →