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Guerrilla Mail vs LectServe

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

APIGuerrilla MailNEW—LectServeNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesno
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Guerrilla Mail vs LectServe: common questions

Which is more reliable, Guerrilla Mail or LectServe?

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

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

Can I call Guerrilla Mail and LectServe from the browser?

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

Are Guerrilla Mail and LectServe free for commercial use?

Guerrilla Mail has unclear commercial terms, and LectServe 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.