Cisco Spark vs Emailvalidation
Same instrument, two spec sheets — measured, not claimed.
Cisco Spark vs Emailvalidation: common questions
Which is more reliable, Cisco Spark or Emailvalidation?
On our scheduled checks, Emailvalidation leads on measured uptime — Cisco Spark at —% versus Emailvalidation 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 Cisco Spark and Emailvalidation need an API key?
Both ask you to authenticate — Cisco Spark uses an API key and Emailvalidation uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.
Can I call Cisco Spark and Emailvalidation from the browser?
Yes — both Cisco Spark and Emailvalidation 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 Cisco Spark and Emailvalidation free for commercial use?
Cisco Spark has unclear commercial terms, and Emailvalidation 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.