Hi @rubsss ,
Welcome to the community!

Currently (as far as I know) you cannot transfer a template from Brevo to Klaviyo as they use different builders.

You could export the HTML and import it to Klaviyo if you have urgencies, but you would not be able to manage it with the builder and then make drag and drop changes.

What I recommend is to recreate it on Klaviyo following the same structure as the previous one and make any enhancements and implementations that Klaviyo allows, for example dynamic products based on a custom product feed and much more.

If you need anything else, don't hesitate to rewrite!