Images uploaded to the portal cloud assets can be inserted into article posts and email templates by administrators. To do this, follow these steps:
Login as an administrator and navigate to the editor.
Click the Image icon.
Select the From Server tab.
On the sidebar, click Assets and then select the image you want to insert. Images can be uploaded to the cloud assets folder by clicking Upload.
Click Insert.
For more information on how to access stored cloud assets in the portal, see this documentation.