Best HubSpot Phone Validation API & Email Verification Integration 2025

// Add this to your HubSpot form's JavaScript
window.addEventListener('message', function(event) {
  if (event.data.type === 'hsFormCallback' && event.data.eventName === 'onFormSubmit') {
    validateContact(event.data.formGuid);
  }
});

async function validateContact(formGuid) {
  const phoneInput = document.querySelector('[name="phone"]');
  const emailInput = document.querySelector('[name="email"]');
  
  if (phoneInput?.value) {
    const validation = await validatePhone(phoneInput.value);
    if (!validation.is_valid) {
      // Handle invalid phone
      showError('Please enter a valid phone number');
      return false;
    }
  }
}

async function validatePhone(phone) {
  const response = await fetch('https://app.1lookup.io/api/v1/phone', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer YOUR_API_KEY',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({ phone })
  });
  
  const data = await response.json();
  return data.data.classification;
}

// Webhook endpoint for HubSpot contact creation/update
app.post('/hubspot-webhook', async (req, res) => {
  const { objectId, propertyName, propertyValue } = req.body[0];
  
  if (propertyName === 'phone') {
    // Validate phone number
    const validation = await fetch('https://app.1lookup.io/api/v1/phone', {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ phone: propertyValue })
    });
    
    const result = await validation.json();
    
    // Update HubSpot contact with validation results
    await updateHubSpotContact(objectId, {
      'phone_validation_status': result.data.classification.is_valid ? 'Valid' : 'Invalid',
      'phone_carrier': result.data.carrier_details?.name || '',
      'phone_line_type': result.data.carrier_details?.type || '',
      'phone_risk_level': result.data.risk_assessment?.risk_level || '',
      'phone_location': result.data.location_details?.city || ''
    });
  }
  
  res.status(200).send('OK');
});

const hubspot = require('@hubspot/api-client');
const fetch = require('node-fetch');

const hubspotClient = new hubspot.Client({
  accessToken: process.env.HUBSPOT_ACCESS_TOKEN
});

async function validateAndUpdateContact(contactId, phone, email) {
  try {
    // Validate phone number
    const phoneResponse = await fetch('https://app.1lookup.io/api/v1/phone', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${process.env.LOOKUP_API_KEY}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ phone })
    });
    
    const phoneData = await phoneResponse.json();
    
    // Validate email
    const emailResponse = await fetch('https://app.1lookup.io/api/v1/email', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${process.env.LOOKUP_API_KEY}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ email })
    });
    
    const emailData = await emailResponse.json();
    
    // Update HubSpot contact
    const properties = {
      phone_validation_status: phoneData.data.classification.is_valid ? 'Valid' : 'Invalid',
      phone_carrier: phoneData.data.carrier_details?.name || '',
      phone_risk_level: phoneData.data.risk_assessment?.risk_level || '',
      email_validation_status: emailData.data.classification.is_valid ? 'Valid' : 'Invalid',
      email_risk_level: emailData.data.risk_assessment?.risk_level || '',
      validation_date: new Date().toISOString()
    };
    
    await hubspotClient.crm.contacts.basicApi.update(contactId, {
      properties: properties
    });
    
    console.log(`Contact ${contactId} updated with validation results`);
    return { success: true, phoneData, emailData };
    
  } catch (error) {
    console.error('Validation error:', error);
    return { success: false, error: error.message };
  }
}

// Example usage
validateAndUpdateContact('12345', '+1234567890', 'test@example.com');