subscription_started Event - Upstack Data

Fires when a new subscription begins (first billing period starts). This marks the start of paid service.

JavaScript

window._upstack('track', 'subscription_started', {
  subscriptionId: 'sub_def456',
  accountId: 'acct_abc123',
  planId: 'plan_pro_monthly',
  planName: 'Pro Plan',
  mrr: 9900,
  billingInterval: 'month'
});

Properties

Property	Type	Required	Description
subscriptionId	string	Yes	Subscription identifier
accountId	string	Yes	Account identifier
planId	string	Yes	Plan identifier
planName	string	No	Plan display name
mrr	number	No	Monthly recurring revenue in cents
billingInterval	string	No	Billing frequency

When to Fire

After first successful charge
When subscription status becomes active
After trial converts to paid