I am trying to measure how many times did each subscriber opened a particular email. I find metric for Opens vs Unique Opens, but for all the subscribers targeted, and not for each subscriber individually. Is there any chance I could track this?
You can use the Data Views to retrieve this information. In the Open one, for example, you have the information about if the open is unique or not (IsUnique field) and as it is a transactional table you can have the date of each click (EventDate field).