To view which images were favorited by your clients, click on the Collection in your Dashboard and then select "Analytics" on the top right.
You can also access your Analytics from your dashboard by hovering over the Collection and clicking the arrow in the top right.
Navigate to the Favorites section and you will see all galleries listed for this Collection as well as all favorites marked in each gallery. Click on a client’s e-mail address in the relevant gallery to view more details.
In the Quick Actions dropdown on your top right, you now have access to quickly share and/or download their selections!