"first-shutdown" ping ===================== This ping is a duplicate of the main-ping sent on first shutdown. Enabling pingsender for first sessions will impact existing engagement metrics. The ``first-shutdown`` ping enables a more accurate view of users that churn after the first session. This ping exists as a stopgap until existing metrics are re-evaluated, allowing us to use the first session ``main-pings`` directly. See :doc:`main-ping` for details about this payload.