We added a new setting (Chat > Image previews) so you can choose to automatically show the images on your device that are sent via markdown even if they are sent by a user outside your company or posted by an Amazon Chime web hook. By default, image urls sent to you in chat by users who are in your company are displayed, but are not if they are sent by someone outside your company or posted via a web hook and you must click on a link to view the image preview.