You can preserve/archive a folder structure by exporting from Outlook to a Personal Folder (.pst file).
NOTE: Some messages may not be cached locally in Outlook. Either sync all messages or create a new profile with no caching.
- In Outlook, select the folder structure you would like to export
- Select the "File" Tab and then Open & Export
- Select Import/Export
- Select Export to a file
- Select Outlook Data File (.pst)
- Verify that the appropriate folder is selected.
- Note: To export your entire mailbox including calendar and contacts, select the root level folder which is usually listed as your email address.
- Select Include subfolders
- Choose where you would like to export the .pst file and the name of the exported file
- Since this is a new file choose, Replace duplicates with items exported
- Select Finish
- It is recommended NOT to add an optional password. If you forget it, your data is lost forever.
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