When in the customer Account you will go to the "Estimates" Tab.
Email Link (RED: You can press "Send" which will send the customer a link to their estimate in the customer portal.
Portal (BLUE): You can press "Open" which will open up the customer portal as the customer would see it for you to view in a popup.
*NOTE: CLICK ON THE LINK BELOW TO VIEW THE REST OF THIS ARTICLE ABOVE.*