We have a customer who performs early case assesments and exports the results to PST for others to access and search within Outlook. They are using SMTP journaling and when they export they select the original format and PST options. You can see individual msg files being generated in the export location and then these are collected into the PST file.
When this PST file is loaded into Outlook there is no preview, the envelope icon for each item is missing and the content cannot be searched within Outlook. The stange thing is tht when you select an item to open it gives the full file name as being an eml file rather than msg.