Yes, you can certainly add your own tracking pixels to emails designed in Delivra!
Navigate to the HTML section of the Drag and Drop Editor. If you have HTML editing permissions, you should be able to access the code of the file.
The pixel should be an <img> tag placed at the very top or very bottom of the HTML tab of a file.
We do not recommend editing the HTML code of a Drag & Drop Editor email file. Should you need assistance with a designed email file that has edited HTML, investigation and/or a resolution could result in billable time.