Klaviyo adds Events API backfill support and changes profile conversations
Klaviyo now supports historical event backfills and returns profile conversations by channel through an updated relation...
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Klaviyo now accepts a **backfill: true** flag for Create Event and Bulk Create Events, suppressing flow triggers for historical events. Its profile relationship also changes from conversation to conversations, with one entry returned for each channel, including SMS, WhatsApp, and Instagram. Shopify merchants should review both API behaviors before updating connected workflows.
