signup_started Event

Fires when a user begins the signup flow. Use this event to measure signup funnel drop-off and optimize conversion.

JavaScript

window._upstack('track', 'signup_started', {
  planId: 'plan_pro_monthly',
  source: 'pricing_page'
});

Property	Type	Required	Description
planId	string	No	Pre-selected plan (if applicable)
source	string	No	Where signup was initiated