Our Shopify Email structure is designed to be user friendly and the existing templates do not have front facing access to the HTML code. You could use the inspect tool from your browser to view the code available for any given template however I’m not certain that the full extent of it would be available. I will leave this open to other developers to weigh in.
however, I don’t understand how you can code your own custom template if you don’t know how you can interact with Shopify dynamic fields/elements.
that’s why I was tempting to access to the templates code
Sorry for the delay here. I found a document that outlines the custom liquid coding you can use to edit/create Shopify Email campaigns. It’s still in early access so if you have any feedback, please do let me know and I can pass it along.