Email Verification API Email Verification Tool

Email Verification API enables users to check the validity and existence of email addresses, a crucial step in optimizing email marketing results and detecting suspicious email addresses. Aside from inspecting email addresses’ syntax to ensure that they conform to IETF standards, the API also checks for the existence of mailboxes and mail servers to make sure they can receive messages. The tool also specifies whether email addresses were created using disposable email services.

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What is Email Verification API Email Verification Tool?

The Email Verification API provided by WHOIS API is a powerful tool for developers and product architects. It allows for real-time validation of email addresses, checking for syntax conformity, identifying whether an address is branded or disposable, verifying the existence of mail servers and mailboxes, and determining if an email address can act as a catch-all address. By utilizing this API, businesses can improve their marketing campaign results, ensure the validity of user email addresses, securely manage password resets, and avoid potentially dangerous or fraudulent email addresses. The API is easy to integrate and is available as part of WHOIS API's premium API services.


  • Email Validation API provides comprehensive validation of email addresses in real-time.
  • It checks the syntax, validity, and quality of email addresses.
  • The API also checks if the email address is custom or generic, and if it is linked to a business email account or a free email service.
  • It verifies the existence of mail servers and mailbox for the email address.
  • The API can be used to prevent email bouncing, reduce spam, and improve marketing campaign results.


  • Comprehensive validation of email addresses in real-time.
  • Reduces email bouncing and blocks spam.
  • Monitors over 2,000 disposable email providers.


  • No information on the accuracy of the email verification results.
  • Lack of integration with popular email marketing platforms.
  • Limited customer support options for troubleshooting or assistance.
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