You can set emails for multiple team members to receive a copy of every accepted proposal. They will receive these copies via email notifications, once a proposal is signed and accepted.
Edit the Business Email Address field to do so:
Step 1: If you are an admin, go to the Office >> Settings >> My Company
Step 2: Enter each email address separated by a comma ( , ) under the Business Email Address field.
Step 3: Click SAVE.
There is no way to set emails to receive every presented proposal automatically, but you can email a customer proposal to as many emails as you like.