Real-Time API

API to verify a single email. in real-time.

Csilla Fehér Written by Csilla Fehér I

What is API?

Application Programming Interface: Basically, you can integrate our email verification system into any other website, application, or software.

Single API

Use our Single API to verify email addresses in real-time. It is advantageous:

  • Integrate your website or application to avoid bad emails being added to your database.
  • Prompt users/subscribers on the spot if they misspell their email addresses.
  • Suppose you would like to start your email verification service.

The rate limit for the single API calls is 400 requests/second. The rate limit is tied to the IP address used for the API calls. Essentially, there's no cap on the number of connections you can make, provided each comes from a unique IP address.

If you see that an API call costs 2,3,4...etc. credits every minute, it is because API calls are logged every 1 minute. This means that if you made multiple calls within a minute, you will see that we deducted more than one credit for the API calls. 

We don't charge credits for Risky emails in the API calls either. However, you won't see a credit refund for these emails in the Credit Balance, as in the case of API calls, we first detect which email addresses are Good or Bad, and only charge credit for those, and the credits for the Risky emails are not deducted in the initial process.

Please note that if you verify the same email address multiple times, we will deduct the credits for all of the API calls, as we cannot detect whether the email address was verified before or not. 

API documentation

Our API documentation is available here:

Your Unique API key You can find a unique API key on this page:

Please keep your API key secure as we use this key to identify your account when making an API call.

Sample code You can find sample codes on this page:

API speed

We have built the fastest email verification API. We can verify an email in less than 100 milliseconds. You can read more about API speed here.

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