After initially capturing emails to the archiver, how can the ESI be verified?

During the initial crawling of user mailboxes, the archiver can turn on very verbose, intense reporting, which has the ability to generate spreadsheets for each mailbox or folder scanned. This includes all data within mailboxes; contact information or other sorts of sensitive materials, not necessarily only emails. The archiver can also use email activity graphs to display the emails sent and received and the issues that may have arisen in those processes.