It seems a version of this question has been asked and answered in the past, but just to confirm:
It is not currently possible to inject actual content into a template (or direct HTML) via the API?
Looking at the API documentation, I don’t see any way fields that seem to support it. The reason why I am asking is that we use Klaviyo for transactional emails right now (for ecommerce) and would like to test ways of publishing content from our site as newsletters. Mailchimp does to support this option, to fetch content from a site, and inject that content as HTML into a campaign (we are using Make for API integrations). Ideally we could do the same with Klaviyo and not use two different email marketing channels.
https://developers.klaviyo.com/en/reference/create-campaign
Best answer by David To
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