shipapis
StarSubmit an APISubmit API

BulkSMS JSON REST API vs Guerrilla Mail

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

APIBulkSMS JSON REST APINEW—Guerrilla MailNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

BulkSMS JSON REST API vs Guerrilla Mail: common questions

Which is more reliable, BulkSMS JSON REST API or Guerrilla Mail?

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

Guerrilla Mail needs no key, while BulkSMS JSON REST API requires a free API key. If you want to start calling without signup, reach for Guerrilla Mail first.

Can I call BulkSMS JSON REST API and Guerrilla Mail from the browser?

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

Are BulkSMS JSON REST API and Guerrilla Mail free for commercial use?

BulkSMS JSON REST API has unclear commercial terms, and Guerrilla Mail 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.