Email template allows you to add Images and marketing material using HTML. However, you just need to know some HTML.
1- In Chargezoom, go to the Configuration Tab and select Email Templates.
2- Select the Template you want to modify
3- In the Email Body, Click the icon for Source
4- The <HTML> source will appear
5- Now, you can insert an image in HTML and Customize your template
6- Use the image tag and include a source and alt attribute. Like any other HTML element, you’ll add images to the body section of your HTML file. The syntax looks like this: <img src="URL" alt="descriptive text">
7- You will be able to click on the preview icon to check the alignment
8- Click Save
Here are some reference websites on how to add images on HTML: