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Every state change in your account — a message getting delivered, a contact unsubscribing, a domain passing verification — produces an event. Events are the single source of truth behind both webhooks and the activity you see in the dashboard.

Events vs. webhooks vs. messages

These three are easy to conflate: If your webhook endpoint goes down for a day, you don’t lose data — query List events for the gap once it’s back up.

Querying events

Retention

Events are retained for 90 days through the API. For longer-term analytics, consume them via webhooks and store them in your own system as they arrive.