If you are building your application / site / ecommerce shop, as a developer, wouldn't it be better if you leave the design of the messages to somebody else?
For this we suggest decoupling Mail Templates from the actual Custom data variables.
Create as many templates as you want in NewsMAN. Use our amazing email template editor. Paste some `HandlebarsJS` code for your variables (you can do loops, conditions too) and you're done.
Get the template ID and use it in your API or JSON Mail Body.