I decided to pull the trigger with MarkupGo and it was a nice decision!
I was able to quickly use it after testing with Postman and integrate in my workflow.
I used it with Pabbly Connect and Activepieces and the process was smooth and the output perfect.
About the templates, being able to use another tool i use (Shuffle.dev), i could create some very nice ones with almost Zero coding.
The limits are very generous and i stacked more codes.
One more thing i'd love in the future is direct PDF templates and option to dinamically load images via URL parameters in the Json request.
Keep up the good work, and happy new year!