This dashboard shows you a list of the contacts who have been sent the fewest emails. This identifies contacts who you aren't emailing frequently and might need to be added to lists. 

You can send this dashboard to yourself or your colleagues either once or on a recurring basis. Find out how to do this here. 

You can filter this dashboard by date range and select emails to exclude.

Individual Volume Least Mailed (119: Individual Volume Least Mailed)

This report shows you the top ten least sent to individuals. If you drill down in this report you can see all the contacts along with the number of sends they've received. This is ordered from least to most.

When you drill-down the report we take you to is 121: Individual Volume Least Mailed - Full Results