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Kickbox vs mail.tm

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

APIKickboxHEALTHY92mail.tmHEALTHY82
Uptime · 30d
Uptime · 90d100%84.3%
Uptime · 30d100%75.0%
P50 · ms592709
P95 · ms36302351
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — open disposable-address checkFree — temporary mailboxes
Rate limitUnpublishedRate limited (429 on exceed); exact policy per docs.mail.tm
In directory since2026-07-052026-07-05
operationalpartialdownno data

Kickbox vs mail.tm: common questions

Which is more reliable, Kickbox or mail.tm?

On our scheduled checks, Kickbox leads on measured uptime — Kickbox at 100% versus mail.tm at 84.3% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Kickbox or mail.tm?

Kickbox has the lower median latency in our checks — Kickbox responds in 592 ms versus mail.tm at 709 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 Kickbox and mail.tm need an API key?

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

Can I call Kickbox and mail.tm from the browser?

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

Are Kickbox and mail.tm free for commercial use?

Kickbox has unclear commercial terms, and mail.tm 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.