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mail.tm vs The Muse

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

APImail.tmHEALTHY82The MuseDEAD0
Uptime · 30d
Uptime · 90d84.3%0.0%
Uptime · 30d75.0%0.0%
P50 · ms709—
P95 · ms2351—
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — temporary mailboxesFree tier — API key required
Rate limitRate limited (429 on exceed); exact policy per docs.mail.tmUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

mail.tm vs The Muse: common questions

Which is more reliable, mail.tm or The Muse?

On our scheduled checks, mail.tm leads on measured uptime — mail.tm at 84.3% versus The Muse at 0.0% 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 The Muse need an API key?

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

Can I call mail.tm and The Muse from the browser?

Neither sends browser-friendly CORS headers reliably, so call mail.tm and The Muse from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are mail.tm and The Muse free for commercial use?

mail.tm has unclear commercial terms, and The Muse 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.