One or multiple documents can be sent in to Kona automatically! You can forward an email containing attachment(s) or send a new email with attachment(s) to firstname.lastname@example.org. The subject line will be the name of the task. Anything in the body of the email will be added to the “Notes” section in the Task Details screen. You can access the document(s) from the Conversations, Tasks, or Documents tabs in My Kona and the Space designated. If not assigned to a space in the email, the task will automatically be added to your “Just For Me” space.
If you wish to send the task to a specific space, or add a due date, etc. follow the steps in this knowledge base article: http://support.kona.com/entries/21884518-how-do-i-add-a-task-via-email.