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HelloSalut vs Postali

Same instrument, two spec sheets — measured, not claimed.

APIHelloSalutNEW—PostaliNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key, no signup, no monthly limit (per site)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

HelloSalut vs Postali: common questions

Which is more reliable, HelloSalut or Postali?

On our scheduled checks, Postali leads on measured uptime — HelloSalut at —% versus Postali at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do HelloSalut and Postali need an API key?

Neither needs a paid key — HelloSalut is callable with no signup, and Postali is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call HelloSalut and Postali from the browser?

Yes — both HelloSalut and Postali send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are HelloSalut and Postali free for commercial use?

HelloSalut has unclear commercial terms, and Postali has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.