Personal Storage Table — Microsoft Outlook's local mailbox format
PST (Personal Storage Table) is a proprietary file format created by Microsoft for Outlook. It stores a complete local copy of your mailbox data including emails, contacts, calendar events, tasks, and notes. PST files follow the MS-PST Open Specification and are the most common format for Outlook data backup and migration.
Origin
Microsoft Outlook
Used by
Outlook on Windows, Exchange exports, enterprise migrations
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