PST File Extension


Technical info of .pst File Extension

DeveloperMicrosoft
CategoryData Files
FormatBinary
Supported platformWindows

What is a PST File Format?

A PST file format is a personal storage format of MS Outlook and Exchange. PST is a widely used file format of MS Outlook because of its various advantages. A PST file contains email folders, notes, contacts, messages and various other data. The Personal Storage Table has the storage limit of 2 GB for a single user or supports ANSI version. Its UNICODE version offers a storage limit of 20 GB which can go up to 50 GB.

More about PST File Format

It is an open proprietary file format to store emails, notes, events and other messages. The format is operated by Microsoft, providing free irrevocable technology licensing.

In MS Exchange Server, the data like events and messages are saved on Server. The PST files are designed to store archived files whereas the OST file of MS Outlook stores data off-line.

Like OST, the file format uses a fixed-block-based allocation scheme where the file can enlarge to its fixed bytes. The file size is automatically adjusted. For data safety, MS Outlook allows users to lock PST files.

PST files with 2GB limit can slow down the performance of MS Outlook when the limit is about to finish. Outlook Express can help to import PST. Conversion from PST to any other format is manually tricky. Taking help from a third app is always a reliable option.

Supportive Programs of PST Files

Windows
  • MS Outlook 2002, 2003, 2007, 2010, 2013, 2016
  • MS Exchange Server
  • MS Outlook Express
  • Softaken PST to MBOX Converter
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