Guerrilla Mail vs The SMS Works API
Same instrument, two spec sheets — measured, not claimed.
Guerrilla Mail vs The SMS Works API: common questions
Which is more reliable, Guerrilla Mail or The SMS Works API?
On our scheduled checks, The SMS Works API leads on measured uptime — Guerrilla Mail at 99.44% versus The SMS Works API at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Guerrilla Mail or The SMS Works API?
The SMS Works API has the lower median latency in our checks — Guerrilla Mail responds in 185 ms versus The SMS Works API at 108 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Guerrilla Mail and The SMS Works API need an API key?
Guerrilla Mail needs no key, while The SMS Works API requires a free API key. If you want to start calling without signup, reach for Guerrilla Mail first.
Can I call Guerrilla Mail and The SMS Works API from the browser?
Yes — both Guerrilla Mail and The SMS Works API 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 The SMS Works API free for commercial use?
Guerrilla Mail has unclear commercial terms, and The SMS Works API 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.