Hello Marc, and thanks for using our plugin.
I’m not sure what you mean when you say that the ticket system is abandoned, do you refer to our premium support? If you are a customer I’ll encourage you to use that, I assure it’s the fastest support channel we have.
Automated newsletter template can be created visually by going to Automated > Template, there you can bring in your custom coded block in the composer. If you want to add custom styles to the whole template you should create a custom html template from scratch. At the moment it’s not possible to switch from a composer created template to raw html (but we’ll re-introduce this option very soon).
Michael