Developer Tools
Postmark
Last updated 2026-08-03 · benchmark measured 2026-08-03 — deterministic & reproducible
Postmark is a transactional email delivery service for developers and businesses.
Is Postmark production-ready?
Legit.Show scores Postmark 83 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Postmark (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Performance. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 48/100
- Accessibility — 88/100
- Security — 55/100
- Privacy — 100/100
- Reliability — 100/100
- Standards — 89/100
- Discoverability — 100/100
What we measured
- Security headers present: HSTS, X-Content-Type-Options.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 154 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 built it
product account @postmarkapp
Who it's for
Solo developers · Small businesses · Startups · Agencies · Side project builders
Pricing
Free plan (100 emails/month), Basic $15/mo (10k emails + $1.80 per 1k overage), Pro $16.50/mo (10k emails + $1.30 per 1k overage), Platform $18/mo (10k emails + $1.20 per 1k overage), custom pricing f