> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upstackdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# subscription_reactivated Event

> Track when a previously churned customer resubscribes.

Fires when a previously churned customer resubscribes. Use this event to measure win-back campaign effectiveness and recovered MRR.

## JavaScript

```javascript theme={null}
window._upstack('track', 'subscription_reactivated', {
  subscriptionId: 'sub_ghi789',
  accountId: 'acct_abc123',
  planId: 'plan_pro_monthly',
  planName: 'Pro Plan',
  mrr: 9900,
  daysSinceChurn: 45
});
```

## Properties

| Property       | Type   | Required | Description                         |
| -------------- | ------ | -------- | ----------------------------------- |
| subscriptionId | string | Yes      | New subscription identifier         |
| accountId      | string | Yes      | Account identifier                  |
| planId         | string | No       | New plan identifier                 |
| planName       | string | No       | Plan display name                   |
| mrr            | number | No       | Recovered MRR in cents              |
| daysSinceChurn | number | No       | Days between churn and reactivation |

## When to Fire

* When former customer signs up again
* When win-back campaign converts
* When churned account starts new subscription