How do I delete an unwanted mail document from this App?
On the iPhone: Tap on the action blue button to the right of the mail, then choose "Delete"
On the iPad: Tap on the editor button, select the mail document you wish to delete (single tap to select, document will be highlighted in red). Tap on the delete (recycle bin) icon in the toolbar bar.
You will be prompted to confirm delete action before the document is deleted.