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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)

Check out the most prominent features of SysInfoTools PST Split tool:

  • Safe and Quick in Action: The PST Split tool performs a quick splitting action of selected PST file in a very safe mode. It does not cause any changes or damage to original PST files and keep the selected PST file intact.
  • Shows File Information: This tool automatically detects the information of selected PST file, such as: PST file name, file type (Unicode or ANSI), file size (in bytes) and total number of email items stored in the file.
  • Displays Files Structure: Once the PST file is selected, the tool scans it and displays the file structure (all the mailbox items) in the left pane. You need to check the mail items of the selected file which you want to split into smaller parts.
  • Enables Password-Protection: The tool enables password-protection which helps users apply password to their new PST files. Users can also select the encryption type, such as: compressible encryption, best encryption or no encryption.
  • Adds/Attaches PST to Outlook: The new PST files can be added/attached to users’ Microsoft Outlook profile directly through the software.
  • Saves Output at Defined Location: Users can save the output PST files at their-defined location. The tool asks to define a location before splitting.
  • Easy-to-use Application: It is an easy-to-use application that requires minimum technical expertise that even a novice technical user can use this tool with ease.
  • Widely Supportable: The tool provides wide supportability which includes all major versions of Microsoft Outlook and all popular Microsoft Windows operating systems.
New Updated Features:
  • Split PST file by size: Select this option to split your Outlook PST file by size. You need to define a particular size (MB/GB) in which you want to split your selected PST file. For e.g. if you define 10 MB of size, the selected PST file will be split into multiple smaller parts (10 MB each).
  • Split PST file by date: Select this option to split your Outlook PST file by date. You can select any of these options: “predefined time period” or “define time period manually”. In predefined time period, you can select any given time period. Or you can also define the time period manually by selecting a date range from the calendar. You can select multiple date ranges and add them in your list.
  • Split PST file by sender email IDs: Select this option to split your Outlook PST file by sender email IDs. This option will provide all the email IDs from which you have received the emails (all are selected by default). You need to select the email ID(s) of which you want to split the selected PST file.

Important Note: This tool does not support splitting of corrupted PST files. If your PST files are corrupted, you cannot use this tool. You need to repair the files first in order to use this software. To repair corrupted PST files, you can try advanced PST File Repair tool of SysInfoTools Software.

Frequently Asked Questions :

Q. 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.

Q. How to move a PST file into another PST file?

Ans. 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.

Q. How to reduce the size of a PST file?

Ans. 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.

Q. 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.

Q. 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).

Q. 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.