Not a question, but I had posted about this on LinkedIn and thought I’d share within the Community too.
Do you use Google Tag Manager to track visitor activity on your site, or wanted to broaden the engagement and intent data you collect from your site?
For some time, I've wondered why there wasn't a GTM tag template for Klaviyo. On our company site we track a significant number of engagement actions, for both prospective and current customers. Every new idea to measure intent and interest - page views, quiz starts, form submits, etc.- meant writing another Custom HTML tag.
My solution has been to build a GTM tag template that will enable those who do not want to handle raw JavaScript to track new custom metrics in Klaviyo quickly.
You can just drop in your event name, optional email, properties, and publish. Done.

I had to learn more JavaScript and GTM template quirks than I planned, but now the workflow is faster, our container is lighter, and most importantly, tracking isn’t limited to whoever can write JS.
You can view and download the template here.
If you do go on to try out the template, please share your feedback!