Submittable enables you to add web images to your organization's Response Template emails. It's simple to do using the image tool in the formatting bar, as shown here:
Locate the image you want to use. Note that the image must already be published on the web.
To copy the image, right-click on it and select "Copy image address":
Then, add the URL to the Image URL field, along with some Alt Text:
You will now see your image appear in your response template:
Once your image appears in the text box, you can resize it by clicking and dragging any corner.
Add additional text or images to your Response Template, then click Save Template at the bottom of the page.