A new statistic - Emails Delivered - has been added to the Activity Report Overview. This number appears only when the report is filtered to show data from a particular Send (i.e., it will not appear when [Show All] is selected).
The Emails Delivered statistic is computed by taking the number of emails sent and subtracting the number of bounces that are caused by a "Bad Address" or "Mail Box Full". This number provides a more refined estimate of the number of emails that were actually delivered without error.
The percentages indicating Open Rate and Clicks from email are also adjusted in this case to measure activity based on the number of emails delivered.