Folder without login

From Wikanual

You can not send email for a folder that does not have a login assigned to it.

INTERDUBS stores files in folders. In order to give a client access to your data in a folder a client login has to point to it, or a parent folder.

When you create a login the default is that a corresponding folder gets created and linked to it.

You can assign a login later to a folder by clicking on the add login link in this folder. The created login will be linked to the folder you did this from.