mail.tm vs UK Bank Holidays

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedOpen Government Licence v3.0
Free tierFree — temporary mailboxesFree, no key
Rate limitRate limited (429 on exceed); exact policy per docs.mail.tmUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

mail.tm vs UK Bank Holidays: common questions

Which is more reliable, mail.tm or UK Bank Holidays?

On our scheduled checks, UK Bank Holidays leads on measured uptime — mail.tm at —% versus UK Bank Holidays 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 UK Bank Holidays need an API key?

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

Can I call mail.tm and UK Bank Holidays from the browser?

Yes — both mail.tm and UK Bank Holidays 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 UK Bank Holidays free for commercial use?

mail.tm has unclear commercial terms, and UK Bank Holidays allows commercial use on its free tier. 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.