How to use PST Walker

Basic Functions

Install or run portable version of PST Walker. Browse and open an Outlook Data File (.pst) or Offline Outlook Data File (.ost) file on your PC.

There are two options for opening a file: Like Microsoft Outlook and Extensive Scan. The Extensive Scan option allows you to recover data from a damaged or corrupted file, but processing takes longer than Like Microsoft Outlook option. Try both options and compare.

Open .pst, .ost file options

When the .pst or .ost file opens, you'll think you're looking at your email program! All of your contact information, email files and folder, and calendar information is present.

OST PST Viewer

If you want to view several emails at once in separate windows, select several messages and click "Selected Items" from the View tab on the menu. Numerous messages can be selected using the standard ctrl-left click and shift-left click commands.

PST Walker email view

PST Walker also lets you save any attachments that are on your emails. Select the email of your choice that has an attachment you wish to save, and select "Save Attachments" from the "File" menu button. Attachments can be opened by double-click as well.

Search Function

Having all of your email available isn't really worthwhile if you can't find what you want. Fortunately, PST Walker has a great search function.

Input the search query you want in the search box and click "Enter". In the example used below, "April", was used in the search field. After the search is performed, only matching entries are displayed.

search in .pst and .ost files

Click "x" to clear the search results and show the contents of the entire folder.

Advanced Search

To enable boolean search select "Advanced search" under "Tools->Search Options...". Boolean search syntax allows you to broaden, limit, and define your search criteria.

search multiple .pst and .ost files

Using AND narows a search by combining terms; it will retrieve emails that use both the search terms you specify, as in this example:

  • July AND "Discount *%"

Using OR broadens a search to include results that contain either of the words you type in.

  • July OR August

Using NOT will narrow a search by excluding certain search terms.

  • NOT July

You can always combine multiple search strategies to focus your search to ensure that you find just the emails you want. Here are some examples of more complex searches.

  • (July OR August) AND Discount
  • July AND NOT Discount

Export Function

With "Export..." under File menu you can convert .pst and .ost files to MSG and EML files or to PST file. There are three options to save:

  • Selected items
  • All items in this folder
  • All items in this folder and subfolders

And three options for titles: item subject, incremental numeric Id and PR_ENTRYID.

Export to a file

Command line options

Have a lot .pst files to repair, but process requires more manual intervention than you want? Automate it with command line options.

pstwalker.exe [filename] [/E[:msg|umsg|eml] [/Name[:Id|EntryId|Subject]] [/PATH:folder] [/FullScan] [/HardDeleted] [/HardDeletedOnly]]

Specifies the .pst files to process. A filename mask can be applied, e.g. c:\source_folder\*.pst
Bulk extract messages to:
  • msg - .msg file format
  • umsg - unicode .msg file format
  • eml - .eml(rfc 822) file format
Naming style for the saved messages:
  • Id - incremental Id
  • EntryId - PR_ENTRYID (unique message identifier)
  • Subject - message subject
Specifies destination folder for bulk extracted messages
Extensive scan (to recover data from a damaged or a corrupted .pst, .ost files)
Find 'hard deleted' and 'orphaned' items
Export only 'hard deleted' and 'orphaned' items

Updated on October 18, 2021

Facebook Email

See Also

Sort and group email files and messages

Sort, arrange and group your email files and messages in a way that's helpful to you. For example, group by the name of the sender or the recipient and sort by the date of the email message, its size, and other options.

Recover emails from an OST file

You can use the OST PST Viewer (pstwalker.exe) to search for and recover emails from an Offline Outlook Data File (.ost). OST PST Viewer can open orphaned, corrupted, encrypted, and password protected .ost files.

Recover Outlook Rules and Alerts

Find hidden Outlook rules and alerts using MAPI properties. Export Outlook rules and alerts to rwz files. Import rules and alerts into Outlook. Supports corrupted, orphan, protected pst and ost files.

Recover deleted folder and emails in Outlook

Accidentally and permanently deleted folder in Outlook? Recover deleted folder (and all its emails, messages, contacts) in Outlook with PST Walker recovery tool. Supports both PST file recovery and OST file recovery.

Search multiple .pst and .ost files without Outlook

Boolean search, Excel-like filtering, instant search. Supports any .pst and .ost files: corrupted, orpah, archive, password protected and encrypted files. Export search results to numerous formats.

Convert Outlook data files to Thunderbird (MBOX)

The normal Thunderbird import process requires that you have a compatible version of Outlook installed on your computer. If you do not have Outlook installed, there are alternatives as noted below.

Email Investigations and Digital Forensics

Email messages contain numerous MAPI properties that can be useful for digital forensic analysis of emails. This article explore how to gather and analyze data related to email investigation and forensic analysis.

Boolean Search Syntax

This guide explains boolean search operators, functions and wildcards (AND, OR, NOT, ALL, ATLEASTONE, NEITHER, NOTALL, ?, *)