Get campaign assets

Drill-down for a standalone campaign: one row per asset (A/B variant, language variant). This is the campaign-side counterpart to GET /deliveries/{smartflowId} for a smartflow -- a type=campaign row from GET /deliveries/overview can be expanded into this list the same way a type=smartflow row expands into its deliveries.

Most campaigns have exactly one asset, so this usually returns a single row whose numbers match the parent row from GET /campaigns or /deliveries/overview -- that's expected, not a bug. It's only interesting for A/B tests (2 assets) or multi-language sends (one asset per language).

sent/delivered/opened/clicked/openRate/clickThroughRate/clickToOpenRate are scoped to [dateFrom, dateTo], unlike GET /campaigns/{campaignId}/ab which deliberately reports all-time numbers for statistical power. unsubscribed, spam and conversions are not attributed per asset (that attribution was never finished) and are always null here -- the real campaign-level totals are available on the parent row from GET /deliveries/overview or GET /campaigns.

{ "assets": [ { "assetId": "00000000-000132ce-0000-0000-000000000000", "assetName": "Thank you for registering! Here's a discount", "language": "en", "from": "news@example.com", "medium": "e-mail", "splitPercentage": 0.5, "datetime": "2026-05-01T08:22:25.000Z", "sent": 952, "delivered": 950, "opened": 210, "clicked": 6, "openRate": 0.221, "clickThroughRate": 0.006, "clickToOpenRate": 0.029, "unsubscribed": null, "spam": null, "conversionsAmount": null, "conversionsNumber": null, "conversionsCurrency": null } ] }

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