user_inactive Event - Upstack Data

Fires when a user becomes inactive after a period of no engagement. Use this event to trigger re-engagement campaigns and identify at-risk accounts.

JavaScript

window._upstack('track', 'user_inactive', {
  userId: 'usr_xyz789',
  accountId: 'acct_abc123',
  userEmail: 'user@acme.com',
  lastActiveDate: '2026-01-15T10:30:00.000Z',
  inactiveDays: 30
});

Properties

Property	Type	Required	Description
userId	string	Yes	User identifier
accountId	string	Yes	Account identifier
userEmail	string	No	User email address
lastActiveDate	string	No	ISO 8601 last activity date
inactiveDays	number	No	Days since last activity

When to Fire

When user hasn’t logged in for defined period (e.g., 30 days)
When automated inactivity check triggers
When engagement score drops below threshold