Just make sound another clickable item. This will make it easy for colleagues to save your images to their hard drives. One reason you want to make that easy is that colleagues can back up not just your text but your images. A large percentage of emails contain material which the entire group would benefit from knowing. Some, however, are confidential.
Some content is obvious, for example, a link to a site is fine for public sharing.
But not all content is clearly one or the other. This saves the recipient from having to send back for permission to share.