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Guerrilla Mail vs Lanyard

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

APIGuerrilla MailNEW—LanyardNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no key; user must be tracked by the Lanyard Discord bot
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Guerrilla Mail vs Lanyard: common questions

Which is more reliable, Guerrilla Mail or Lanyard?

On our scheduled checks, Lanyard leads on measured uptime — Guerrilla Mail at —% versus Lanyard 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 Guerrilla Mail and Lanyard need an API key?

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

Can I call Guerrilla Mail and Lanyard from the browser?

Yes — both Guerrilla Mail and Lanyard 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 Guerrilla Mail and Lanyard free for commercial use?

Guerrilla Mail has unclear commercial terms, and Lanyard 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.