When going into campaign reporting to see opens while it's nice to have a separate dropdown for both "Unique" and "All" opens, it's not clear which audience members opened an email more than once, particularly when they are non-consecutive. It would help if there was a way to sort columns by email in the "All opens" view, so that I can see which emails have multiple opens listed, with their open dates/times listed together for better understanding of individual's repeat open behavior.
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