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OOPSpam vs Poptin API

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

APIOOPSpamHEALTHY99Poptin APIREACHABLE100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms217698
P95 · ms4341705
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified
Free tierFree — limits not published
Rate limit1000 req/window · 999 remaining120 req/window · 119 remaining
In directory since2026-07-052026-10-04
operationalpartialdownno data

OOPSpam vs Poptin API: common questions

Which is more reliable, OOPSpam or Poptin API?

Both are neck-and-neck — OOPSpam and Poptin API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, OOPSpam or Poptin API?

OOPSpam has the lower median latency in our checks — OOPSpam responds in 217 ms versus Poptin API at 698 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do OOPSpam and Poptin API need an API key?

OOPSpam needs no key, while Poptin API requires a free API key. If you want to start calling without signup, reach for OOPSpam first.

Can I call OOPSpam and Poptin API from the browser?

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

Are OOPSpam and Poptin API free for commercial use?

OOPSpam has unclear commercial terms, and Poptin API 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.