To create content that includes images for Outlook, you need to create an HTML formatted content. A simple way to do this is to use the Uploader Add-In for Office (Word):

  1. Create your content including images in Word
  2. Launch the Uploader Add-In for Office (Word)
  3. Follow the steps in the documentation to create new content
  4. Choose the format to be HTML.

ATTENTION: Make sure to do this in Word Online as Word on other platforms currently creates an HTML file with a linked image, instead of an embedded image. Linked images in emails will not work other than on the device and app you created the content with.