A final form of notification (email) is based on EJS. The procedure involves two steps:
- The billing system generates the XML-file with the required data.
- The XML-file is converted into the JSON-file that the EJS-template is applied to. As a result, the system generates the email in HTML.
Navigate to Settings → Message templates → select a message type → select a template → Edit to edit or test (Test) the existing template.