What Is The Validation Process

Our validation process is one of the best in the industry. After we have received an email address via the UI or API, we perform a series of tests that verify its validity.


We check for various factors including but not limited to:

  • syntax errors
  • duplicates (when validations are done via bulk upload)
  • domain authenticity check
  • role account detection
  • mail server record checking
  • identification of risky addresses
  • disposable or temporary address check
  • catch-all configuration
  • server response
  • full/disabled inbox
  • free email service provider
  • check against your account level blacklist


Further, we also employ technologies like anti-graylisting to get you the most accurate results.