Developer Tools
MailCull
Last updated 2026-06-30 · benchmark measured 2026-08-09 — deterministic & reproducible
MailCull verifies email addresses and cleans mailing lists before you send.
Is MailCull production-ready?
Legit.Show scores MailCull 95 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on MailCull (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Performance. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 74/100
- Accessibility — 95/100
- Security — 100/100
- Privacy — 100/100
- Reliability — 100/100
- Standards — 94/100
- Discoverability — 100/100
What we measured
- Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 1117 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.
- Discoverable: structured data, sitemap, OpenGraph image, canonical URL.
Who it's for
Marketers · Email campaigns · Developers · SaaS businesses · Data managers
Pricing
500 free checks per month, no credit card required; paid plans available
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