Hi Amaan,

Luke from the Product team here. Thanks for submitting this feature request. 

Klaviyo recently released its Reporting API. We were eager to implement it because we are aware of a longstanding gap with their EVENT data, whereby it isn't possible to recreate the reports they have in their UI because attribution is handled differently (source).

We started by implementing the Flow Series report because it supports daily reporting. Unfortunately, for Campaign reports, Klaviyo has yet to release a "Series" version. They've only released a "Campaign Values" version, which aggregates metrics for campaigns into a single row rather than providing a daily/weekly/monthly report.

We plan to add a Campaign report to our schema as soon as Klaviyo adds a new Campaign Series endpoint. 

Cheers,
Luke