19. Data File Management

Outlook uses two types of data files to store your email, calendar, contacts, and tasks on your computer: Personal Folders and Offline Folders. All your Outlook data—email, calendar, contacts, tasks, and notes—are stored in one or more data files.

Understanding Outlook Data File Types

Personal Folders have the file extension .pst and are often referred to as simply “pst.” Personal Folders files are used with POP3 (Post Office Protocol 3) email accounts or “No mail” profiles and ...

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