Hi @Mike-H
Klaviyo’s native reporting and dashboards are OK for reporting for users, but is lacking in certain areas.
Like @ali786 says, I create my client reports in spreadsheets for use in MS PPT or Google Looker Studio depending on my requirement.
A web service called Supermetrics (paid) does have various data source modules for Looker, including Klaviyo, that can reduce the need for spreadsheets and keep the data up-to-date in near realtime. I’ve used Supermetrics for combining data sources including digital ads, Google Analytics etc but I’ve not tried their Klaviyo module.
Hope that helps
Andy