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Guerrilla Mail vs Public Time API

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

APIGuerrilla MailHEALTHY96Public Time APIHEALTHY97
Uptime · 30d
Uptime · 90d99.44%99.44%
Uptime · 30d100%98.3%
P50 · ms185311
P95 · ms4899449
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedRetry-After: 1020s
In directory since2026-07-052026-07-05
operationalpartialdownno data

Guerrilla Mail vs Public Time API: common questions

Which is more reliable, Guerrilla Mail or Public Time API?

Both are neck-and-neck — Guerrilla Mail and Public Time API each measure 99.44% 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, Guerrilla Mail or Public Time API?

Guerrilla Mail has the lower median latency in our checks — Guerrilla Mail responds in 185 ms versus Public Time API at 311 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 Guerrilla Mail and Public Time API need an API key?

Neither needs a paid key — Guerrilla Mail is callable with no signup, and Public Time API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Guerrilla Mail and Public Time API from the browser?

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

Are Guerrilla Mail and Public Time API free for commercial use?

Guerrilla Mail has unclear commercial terms, and Public Time 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.