Emailvalidation vs Kickbox
Same instrument, two spec sheets — measured, not claimed.
Emailvalidation vs Kickbox: common questions
Which is more reliable, Emailvalidation or Kickbox?
On our scheduled checks, Kickbox leads on measured uptime — Emailvalidation at 0.0% versus Kickbox 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.
Do Emailvalidation and Kickbox need an API key?
Kickbox needs no key, while Emailvalidation requires a free API key. If you want to start calling without signup, reach for Kickbox first.
Can I call Emailvalidation and Kickbox from the browser?
Yes — both Emailvalidation and Kickbox 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 Emailvalidation and Kickbox free for commercial use?
Emailvalidation has unclear commercial terms, and Kickbox 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.