This card appears for candidates, contacts, and companies and displays a line graph representing the number of emails, both sent and received, between the candidates or contacts and your coworkers over time (either the current day, over 12 months, over 5 years, or for all time). If you click on a date on the horizontal axis, you can view the subjects of the emails for that time period and, in turn, can click on the subject to view the message body.