Adding different media and images to a newsletter is a great way to engage your readers. Please note that images must be hosted online in order to be featured in a newsletter.
There are a few ways of going about this, here is one way. If you have any questions or run into trouble, reach out to your CSM or Support.
One way of creating an image that is hosted online is to upload the image to a site such as Imgur.
(You are required to have an account to utilize Imgur. You can create your account using your existing login with Facebook, Twitter, Apple, Google, or Yahoo.)
How to Upload a New Image to Imgur
On your Imgur dashboard, click on "New Post" on the top left hand corner of your screen.
When the popup window appears, upload your image.
When the image is done loading, right click on the image and select "Copy Image Address".
Go to your newsletter, and paste the image address into the 'Source' field of the Insert/Edit Image options.