Our API makes use of api key based authentication. You can retrieve your API key by visiting the API section of your dashboard..

Email List Validation API

Email List Validation provides a developer API to integrate the email verification process with your service. Our API provides the ability to check individual email addresses and can accept an email list through file upload.

Verify Email

Submits an email address for verification. We provide the following API libraries:

The response will be returned in the form of a plain text string:

  • ok : - The supplied email address has passed all verification tests

  • fail : - The supplied email address has failed one or more tests

  • unknown: - The supplied email address can not be accurately tested

  • incorrect: - No email address was provided in the request or it contains a syntax error

  • key_not_valid: - No api key was provided in the request or it was invalid

  • missing parameters: - There are no validations remaining to complete this attempt

When the response is fail it can be for one of the following reasons:

  • The address provided does not exist

  • The mailbox is full

  • The address provided is a disposable email address

  • The address provided is not in a valid format

  • The address provided is a role account

  • The address provided does not have a valid dns

  • The address provided does not have a mx server

  • The address provided was found in your internal blacklist containing previously failed addresses

  • The domain provided was found in your domain blacklist

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