Compatibility: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007
OST to PST Converter is a powerful tool that can convert multiple OST files to PST files. The tool can extract emails from .ost files without requiring Microsoft Outlook or a server account connection. This makes it a useful application in case of data loss, corruption, or inaccessibility of .ost files. However, Microsoft Outlook must be installed on your PC to create a new .pst file or exporting to an existing .pst file.
When you can open an .ost file in Microsoft Outlook, you can use it to export items by creating a .pst file. However, if you're using Cached Exchange Mode, Outlook will only export the items in your current cache. By default, Outlook configures Exchange and Microsoft 365 accounts to only synchronize the past 12 months of your email. Follow the export instructions to move your email from the .ost file to a .pst file. To export more than the past 12 months of data, turn off Cached Exchange Mode first.
If you encounter Outlook connection issues or cannot open your .ost file, use OST PST Viewer to open, export or backup emails from your .ost file.
After your email data is exported to a .pst file, it's portable. You can save, backup, or open the converted .pst files on another computer. Follow these steps to convert one or multiple OST files to PST files.
The OST to PST Converter offers a range of export options to customize your conversion. Choose to create separate folders for each OST file, preserve the original folder structure, ignore empty folders, create separate PST files for each folder, and automatically rename converted files if necessary.
Follow these steps to find and export specific selected items from OST to PST files:
OST files contain your important and confidential data. When you use an online service to convert email from OST to PST, all of your sensitive data, including private messages, contacts, tasks and notes, is transferred to someone else's server. The data is processed on an unknown computer and you have no control over it. Only then will you be able to download the resulting PST file.
Unlike online converters, our utility works strictly on your computer. Information from the OST data file is not uploaded anywhere. Your data will not fall into the wrong hands.
There is no limit on the number and size of the converted OST files and the resulting PST files. You can convert unlimited files as often as you like.
The program can bulk convert PST to OST in batch scripts using PowerShell, Task Scheduler and other automation tools. To do this, use the command line options of the product.
Note: Command line parameters are not available in the Home license.
pstwalker-cli.exe
[filename]
[-E:<FileFormatParameter>]
[-Name:<NamingStyleParameter>]
[-SearchQuery:<String>]
[-ExportPath:<DestinationPathParameter>]
[-FullScan]
[-HardDeleted | -HardDeletedOnly]
[-Log]
cd "C:\Program Files (x86)\PST Walker\"
$PSTFiles = @("c:\a.ost", "c:\b.ost")
foreach ($PST in $PSTFiles){
.\pstwalker-cli.exe "$PST" --% -E:pst -SearchQuery:'from:(=bobbymoore@contoso.com OR "bobby moore")'-ExportPath:"D:\PST-Exports\"
}
This example searches c:\a.ost and c:\b.ost mailboxes for items in which the e-mail address equals bobbymoore@contoso.com OR sender name contains bobby moore. The search results are exported to D:\PST-Exports\a.pst and D:\PST-Exports\b.pst
When running native commands from PowerShell, the arguments are first parsed by PowerShell. Beginning in PowerShell 3.0, you can use the stop-parsing (--%) token to stop PowerShell from interpreting input as PowerShell commands or expressions.
cd C:\Program Files (x86)\PST Walker\
pstwalker-cli.exe c:\users\*.pst -E:eml -ExportPath:"D:\PST-Queries\" -SearchQuery:'subject:"Your bank statement"' -FullScan -HardDeleted
This example searches all .pst files in c:\users folder for messages and hard deleted messages that contain the phrase "Your bank statement" in the subject. The search results are exported as .eml files to D:\PST-Queries\.
Updated on May 23, 2023
Accidentally and permanently deleted items in Outlook? Stop using Outlook immediately, download a recovery tool, open your mailbox in safe mode, and follow the tool's instructions to recover your deleted items.
There are several tools available that can help you recover data from an OST file. They can help you recover important data from your OST file and save it in various file formats for future use.