You can upload and view any image files on your account by looking in the File Manager.
To access / view any previously uploaded file, go to the Account Settings & select the File Manager.
You can add new uploads by selecting the (+) sign in the lower right corner.
You can delete an image, by selecting it and then clicking the trash can icon.
There will be a preview of the image on the right side along with file details.
Images can be used in locations such as Templates, Email Editor, and SMS Content Editors.
Account Settings Overview