E-mail threading: how can we track e-mail history in Folder HelpDesk?

For both manual and automatic conversion it is possible to add incoming e-mails to an existing ticket. Manual conversion: If you convert e-mails to tickets manually, you are asked if you want to create a new ticket or add the e-mail to an existing ticket. Automatic conversion: There are two ways of saving associated e-mails to a ticket automatically: in subfolders in the ticket body field Enable one of them ‒ or both ‒ if you want to track e-mail history.
History in the ticket body	History in subfolders
Sent/Received e-mails concerning the case are integrated chronologically from bottom to top along with .html formatting and header.	The subfolders will be created automatically, and all e-mails concerning the same case will be saved to the same subfolder. If this option is checked, the Folder HelpDesk ticket gets two new tabs for Sent and Received e-mails.   The subfolders are gathered under the Folder HelpDesk folder in Outlook, and when they are too many they can easily be removed with the tool PFHDCleanSubfolders.exe.