To add an image to the email template, you must first upload the image you wish to attach into the authoring file library or host the image elsewhere and generate an image link.
In the email body text toolbar, select the source code button.
Next, enter the following code into the body:
`<p><img border="0" height="75" src="IMG LINK PLACEHOLDER" /></p>`
Paste the link to the image you wish to attach into the `IMG LINK PLACEHOLDER`. You can adjust the placement and size of the image to your liking. Lastly, select the source code button again to see the image appear in the email body.