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mail.tm vs TimeAPI.io

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

APImail.tmNEW—TimeAPI.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — temporary mailboxesFree — limits not published
Rate limitRate limited (429 on exceed); exact policy per docs.mail.tmUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

mail.tm vs TimeAPI.io: common questions

Which is more reliable, mail.tm or TimeAPI.io?

On our scheduled checks, TimeAPI.io leads on measured uptime — mail.tm at —% versus TimeAPI.io 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 mail.tm and TimeAPI.io need an API key?

Neither needs a paid key — mail.tm is callable with no signup, and TimeAPI.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call mail.tm and TimeAPI.io from the browser?

Yes — both mail.tm and TimeAPI.io 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 mail.tm and TimeAPI.io free for commercial use?

mail.tm has unclear commercial terms, and TimeAPI.io 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.