Optionalapp_App this preference is scoped to (app_...). null indicates a system-level (no-app) slot that applies across all apps.
Delivery channel for this preference, e.g. "email". The in_app channel is always active and never has a preference row.
Optionalcreated_When this preference record was created (ISO 8601).
Whether delivery over this channel is enabled for the given type-and-app combination. false suppresses delivery even when the notification is triggered.
Preference record ID (ntfp_...).
Notification type in wire-format. Built-in types use their atom name, e.g. "app_info" or "billing_alert". Custom notification types use the form "custom:<lookup_key>".
Optionalupdated_When this preference record was last modified (ISO 8601).
A single per-channel notification preference for the authenticated viewer, scoped to a notification type and optional app.