Please how can I add custom placeholder to the portal editor for infobip email service.
I have created a template with the portal design editor and I want to dynamically add placeholders like the recipients first name or the recipients and invoice ID or any other necessary data concerning the recipient, I'm trying to create an invoice email for my customers.
From the API documentation, I have seen the place to pass in the template ID but I'm not seeing any place where I can pass in my own custom variables for the custom recipient data. so please help if there is any and thanks.