We have built the fastest email verification API. We can literally verify an email in less than 100 milliseconds. However, email verification speed is greatly depends on the recipients' servers location and speed.
If a mail servers response time is good, we normally provide results in less than 0.5 seconds. Unfortunately, some mail servers are not that fast and an email address verification can take more than 20 seconds.
Check how long a query took
In our API response you can see in milliseconds how long the email verification took.
If you check in your own system how long an email verification takes and it is different from the value provided in our API response it is the communication time between your and our servers. The internet connection and the physical location mainly affects the communication speed between our servers.
MillionVerifier has its main server in Budapest, Hungary, European Union.