Legit.Show measured uChecker's Security frame at 65/100. Security headers present: HSTS, X-Content-Type-Options, Referrer-Policy. Served over HTTPS with a valid certificate.

How does Legit.Show measure uChecker?

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.

Business & Finance

uChecker

Last updated 2026-08-16 · benchmark measured 2026-09-17 — deterministic & reproducible

Online email validation and mailing list cleaning service for up to 9 million addresses.

89/100

7/7 frames

Top 16% of 14,434 measured

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 2026-09-17 · scores move as sites change

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To cite this score: legit.show/s/uchecker-net/2026-09-17. That address never changes; this page moves with every re-measure.

Legit.Show scored uChecker 89/100 on 2026-09-17, measured across all 7 frames from its public surface. legit.show/s/uchecker-net/2026-09-17

Is uChecker production-ready?

Legit.Show scores uChecker 89 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on uChecker (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 96/100
Accessibility — 96/100
Security — 65/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 75/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 89/100
Discoverability — 100/100

What we measured

Security headers present: HSTS, X-Content-Type-Options, Referrer-Policy.
No Content-Security-Policy.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 1427 ms to first byte.
Returns a proper 404 for unknown routes.
3 of 3 sampled routes reachable.
Has a reachable privacy policy.
Sets cookies / loads scripts with no consent prompt.

Who it's for

Email marketers · B2B teams · ESP users · Mailing list managers · Email campaign organizers

Pricing

Free tier up to 100 addresses; pay-per-address plans starting at 0.20 ₽ (€0.002) per email, scaling down to 0.05 ₽ per email at volume

Sources and updates

Description: Taken from uchecker.net's own website on 2026-08-16.
Operator: uChecker, as named in uchecker.net'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 2026-09-17.

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

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