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Customer’s name. Used for identity resolution and destination matching. 
window._upstack('track', 'purchase', {
  firstName: 'Jane',
  lastName: 'Smith',
  email: 'jane.smith@example.com',
  transactionId: 'ORD-123',
  value: 149.99,
  currency: 'USD'
});
TypeRequiredEvents
stringNoAll events

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Privacy

Names are normalized (lowercase, trimmed) and SHA-256 hashed before being sent to advertising destinations.

email

Customer email — primary identifier.

phone

Customer phone number.

Address Properties

Shipping and billing address fields.