From within an email template – by clicking on the Insert Image icon as shown below this will enable you to access your e-Marketing image file library.
Once you have clicked this icon you can view your image library. If there are any images you wish to delete you can select them with a tick in the bottom right-hand corner – where you will then see a ‘Manage’ button
Click on ‘Manage’ and you can select ‘Remove’ to remove the image.