PO Approval. Originator of PO needs to be notified by email

Right now in NAV approvals, once a PO is created, the approver gets and email. The approver then approves the PO. Meanwhile, the originator could be sitting there for a week not knowing if the PO is approved or not. Has anyone customized the system so that after a document has been approved, that the originating person gets an email letting them know it has been approved ?