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Helium vs Tomba email finder

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

APIHeliumNEW—Tomba email finderNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFirst 50 queries per IP free, no key (paid API key beyond, ~$0.02/query)Free tier — API key required
Rate limit50 free queries per IP subnetUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Helium vs Tomba email finder: common questions

Which is more reliable, Helium or Tomba email finder?

On our scheduled checks, Tomba email finder leads on measured uptime — Helium at —% versus Tomba email finder 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 Helium and Tomba email finder need an API key?

Helium needs no key, while Tomba email finder requires a free API key. If you want to start calling without signup, reach for Helium first.

Can I call Helium and Tomba email finder from the browser?

Only Tomba email finder is browser-friendly — it returns CORS headers over HTTPS. Helium needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Helium and Tomba email finder free for commercial use?

Helium has unclear commercial terms, and Tomba email finder 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.