How to create Personal Folders.
To use a Personal Folders file, you first need to create it. We've shown a summary of this process and the result in the picture. You'll get a chance to go through the complete process for yourself in the practice at the end of this lesson.
Start from the File
menu in the main Outlook window, and point to New
Click Outlook Data File
Select Office Outlook Personal Folders File (.pst)
Once you've gone through the process of creating the new Personal Folders storage file, you'll see the result in the Navigation Pane below Mailbox