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SysInfoTools PST Split v3.0

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[Please refer to the table before downloading demo version.]

Bitness of Outlook on targeted computer
Bitness of Windows on targeted computer
SysInfoTools PST Split build required on target computer
32-bit or 64-bit
SysInfoTools PST Split x86 (32-bit)
SysInfoTools PST Split x64 (64-bit)

Advantages of SysInfoTools PST Split tool are:
  • Easy-to-use application: PST Split software from SysInfoTools is extremely easy to use, a non-technical user can split PST file of any size into multiple PST files to increase the performance of MS Outlook.
  • Fast Splitting process: This software splits large PST files in just few clicks. This tool uses multiple options such as date, size, email ID, selected folder etc. to split large sized PST file.
  • This tool uses highly to keep the originality of the PST file and maintains the structure of the new PST files
  • Supports all versions of MS Outlook 2000, 2002, 2003, 2007, 2010 and 2013


  • Smoothly runs with all Windows 2000/XP/2003, Vista and win 7
Updated Features:
  • Various changes in software and user interface, making it much more robust and even more appealing GUI ( Graphic User Interface).
  • Major changes are done to make the software to handle large number and size of PST files to be Split. This is especially helpful for administrators where they need to deal with large set of files for distribution or archival purpose.
  • Fixed minor issue.

  • Question 1: What is PST file?
    Ans. A Personal Folders file (PST) is an Outlook data file that stores messages and other items. Home user as well as organizations depends upon MS outlook for their messages, information, calendars and contacts. PST files uses a fixed block allocation, the file is enlarged by a fixed amount of bytes. So when email messages are added to a .pst file, its file size is automatically adjusted by the mail client.
    Outlook 2002 and earlier use ANSI format for PST files. This format has a file size limit of 2GB.
    Exceeding the file size limit prompt error message ".pst has reached maximum size limit," and could become corrupted. In Outlook 2003 and later versions, PST files are created in the Unicode format and have a default maximum size of 20 GB.
  • Question 2: How to move a PST file into another PST file?

    Follow these steps to export PST file:

    1. Open Outlook.
    2. On the File menu, click Import and Export.
    3. Click Export to File, and then click next.
    4. Click Personal Folder, and then click next.
    5. Click the folder that you want to export the .pst file to and then click Next.
    6. Click Browse, and then select the location where you want the new .pst file to be saved.
    7. In the File Name box, type the name that you want to use for the new .pst file, and then click OK.
    8. Click Finish.
  • Question 3: How to reduce the size of a PST file?

    Follow these steps to reduce the size of a PST file

    • On the File menu, click Data File Management.
    • Click the data file that you want to compact, and then click Settings.
    • Click Compact Now.
  • Question 4: How to increase Unicode PST files size?

    Ans: You need to go to the following location in the registry:

    1. Outlook 2003: HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\PST
    2. Outlook 2007: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\PST
    3. Outlook 2010: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\PST
    Then create 2 new DWORD values (these values are case sensitive):
    • Warn Large File Size: The value is how many MB a user can write to a pst-file. This value cannot be higher than higher than 4090445042 (decimal) or f3cf3cf2 (hexadecimal).
    • Max Large File Size: This value is how many MB the system can write to a pst-file. This difference has to be at least 5% since there is more written to a pst-file than just user data. This value cannot be higher than 4294967295 (decimal) or ffffffff (hexadecimal).
  • Question 5: How to create default PST file?

    Ans: Open Outlook, click Tools, and then click E-Mail Accounts to open the E-Mail Accounts dialog box.

    The easiest way to convert a ANSI .pst file is to UNOCDE PST files create a new data file in the .pst format that supports Unicode and then import items from the old data file to the new Microsoft Outlook Personal Folders file (.pst).

    • Under the E-Mail section, click View or Change Existing Email Accounts, and then click next.
    • In the E-Mail Accounts dialog box, click the New Outlook Data File button.
    • Under Types of Storage, click Personal Folders File (.pst), and then click OK. The Create or Open Outlook Data File dialog box appears.
    • Accept the Outlook folder as the default save location or provide a custom save location.
    • In the File Name box, create a custom name for the personal folders (.pst) file, or accept the default name. Click OK, and then the Create Microsoft Personal Folders dialog box appears.
    • In the Name box, you can type a custom title for the personal folders (.pst) file, or accept the default title of Personal Folders. This name appears on the Folders List, and is applied to any shortcuts made for the personal folders (.pst) file on the Outlook Bar. You can select a custom Encryption Setting and/or a Password for the personal folders (.pst) file. After you enter your desired settings, click OK.
    • In the Outlook Data Files dialog box, an entry appears for the personal folders (.pst) file. Click Close to close the dialog box.
    • Click Finish.
    • The new personal folders (.pst) file is be added to your Folder List.
  • Question 6: Software prompt error message "Please reinstall the application, some dll's are missing to install." , what i am missing to run the software?

    Ans: Software relies on "redemption.dll" , which is core dll for functionality. It is a COM Dll so it needs to be registered or it must be present on the same folder on which "software.exe" reside.

    Please make sure that dll is present on the above said location and try to install it using regsvr32.exe which is a standard windows executable to register COM Dlls.

    standard command to register COM dll on your system is:

    c:\> regsvr32.exe "[path of program folder]\redemption.dll"

    There are chances that you have installed various other email migration tools from different vendors on your system and they also use the same core DLL but different versions. COM Dlls are system wide available so their installation can also cause to this behavior of the software. If possible then try to un-install them from your system.

    If problem still persist then please mail us again at support[at]sysinfotools[dot]com and also mention your OS version and MS Outlook version you are using. This will greatly helps us to identify the problem.

    If you have another system on your disposal then you can install our demo version on that system and check for this behavior, If things work on that system then without uninstalling demo version install the full version and send us new .info file at sales[at]sysinfotools[dot]com and we will issue a new software activation key.