I too would be looking for this, as this is a blocker for my current project. In my case, I’m probably going to resort to a dynamic php page to be included in the body of the email, to meet strict formatting requirements.
I followed the @Hyperbytes method.
So we are creating a daily email of records that will go to subscribers.
Everything is working as it should but the email is showing code.
Use sendgrid.com (there is a free tier) and handlebars will process the array for you and output exactly as you wish. You can design very nice emails and sendgrid deals with the data merging and sending. They’ve also got a webhook API that allows you to track delivery and open events