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Abstract Email Validation vs npm Registry

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

APIAbstract Email ValidationREACHABLE—npm RegistryNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — 100 requests/monthFree (public registry)
Rate limit100 requests/month on free planUnpublished (bulk scraping discouraged)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Abstract Email Validation vs npm Registry: common questions

Which is more reliable, Abstract Email Validation or npm Registry?

On our scheduled checks, npm Registry leads on measured uptime — Abstract Email Validation at —% versus npm Registry 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 Abstract Email Validation and npm Registry need an API key?

npm Registry needs no key, while Abstract Email Validation requires a free API key. If you want to start calling without signup, reach for npm Registry first.

Can I call Abstract Email Validation and npm Registry from the browser?

Yes — both Abstract Email Validation and npm Registry 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 Abstract Email Validation and npm Registry free for commercial use?

Abstract Email Validation has unclear commercial terms, and npm Registry 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.