Get Mailbox Folder Statistics that includes Dates of the Oldest and Newest Mail Items

Get-MailboxFolderStatistics rdanie21 -IncludeOldestAndNewestItems  | Sort name | Select Name, Folderpath, ItemsInFolder, FolderSize, OldestItemReceivedDate You want to list the mailbox folders for a mailbox and include the date of the oldest item within that folder.

Run the following:

Get-MailboxFolderStatistics mailbox -IncludeOldestAndNewestItems  | Sort name | Select Name, Folderpath, ItemsInFolder, FolderSize, OldestItemReceivedDate