It would be great if I can add a document to my Task list in To-Do (like the new functionality in Outlook where I can add a email to my Task list.

Today I scan my document which I get by post and save them directly in OneDrive. If I have for example a invoice, I would like to add a reminder for that.
At the Moment I have a Workaround and send me my document by email and add this email to my To-Do App as a new Task.