HIPAA-Compliant Email Validation:
Secure Patient Communication

// HIPAA-compliant email validation
async function validatePatientEmail(email, patientId) {
  const params = new URLSearchParams({
    email: email,
    verifyMx: 'true',
    verifySmtp: 'true',
    detectName: 'true',
    suggestDomain: 'true',
    checkDomainAge: 'true',
    checkDomainRegistration: 'true'
  });

  const response = await fetch(`https://api.email-check.app/v1-get-email-details?${params}`, {
    method: 'GET',
    headers: {
      'accept': 'application/json',
      'x-api-key': 'YOUR_HIPAA_API_KEY',
      'X-Healthcare-BAA': 'true'
    }
  });

  const result = await response.json();

  // Log validation attempt for audit trail
  await logValidationEvent({
    patientId: patientId,
    email: email,
    timestamp: new Date().toISOString(),
    result: (result.validFormat && result.validMx && result.validSmtp) ? 'valid' : 'invalid'
  });

  // Transform result to match expected format
  return {
    valid: result.validFormat && result.validMx && result.validSmtp,
    details: result
  };
}

// Real-time validation in patient registration
document.getElementById('patient-email').addEventListener('blur', async (e) => {
  const email = e.target.value;

  if (email) {
    const validation = await validatePatientEmail(email, getCurrentPatientId());

    if (!validation.valid) {
      showError('Please enter a valid email address');
      e.target.classList.add('border-red-500');
    } else {
      clearError();
      e.target.classList.remove('border-red-500');
    }
  }
});