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Findwork vs mailboxlayer

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

APIFindworkNEW—mailboxlayerNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — key may be required
Rate limit4294967295 req/window · 4294967295 remaining · resets 0Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Findwork vs mailboxlayer: common questions

Which is more reliable, Findwork or mailboxlayer?

On our scheduled checks, mailboxlayer leads on measured uptime — Findwork at —% versus mailboxlayer 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 Findwork and mailboxlayer need an API key?

Both ask you to authenticate — Findwork uses an API key and mailboxlayer uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call Findwork and mailboxlayer from the browser?

Neither sends browser-friendly CORS headers reliably, so call Findwork and mailboxlayer from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Findwork and mailboxlayer free for commercial use?

Findwork has unclear commercial terms, and mailboxlayer 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.