Yes you can, when the active days count of 14 days is reached all documents not answered on the sent to box will be removed and the original document will go to your in progress box on dashboard

When you click on that document you will get a button called external

Click on that and you will see a list of email addresses and the status of each one of them

Now if you edit the document and go to external tab again, you can choose to send to all not responded, send to one of them, or select parts of them and send to selected again.