HI Enomis,

Large size of PST file can cause various problems in Outlook or become the reason behind the corruption issues.  Large size of PST files also slow down your Outlook interface thats why Outlook users should always reduce the size of their PST file.

Outlook provides several methods to reduce the size of large PST file:

Compact: Compact helps to reduce the unwanted white spaces from the emails and reduce the emails size.

Archiving: Archiving is one of the best and easy solution to reduce the file size of Outlook data file.You can also set an auto archive option in Outlook.

Export: Using this option, you can even export and save the PST data into an external drive and use it for further use by simply importing it.

Deleted Unwanted Emails: Always delete unwanted emails or always set protection level high for junk emails in MS-Outlook.

For more: http://www.wikihow.com/Reduce-or-Compact-the-Size-of-an-Outlook-PST-File
Note: Improve community discussions by marking the answers helpful.

Thanks
Clark Kent

• Marked as answer by Steve FanMicrosoft contingent staff, Moderator Monday, May 05, 2014 8:18 AM

Hi. How do I downsize my *.pst file for outlook 2007. Deleting folders and their content does NOT work. My *.pst file is now more then 8 gig!. Thank you

HI Enomis,

Large size of PST file can cause various problems in Outlook or become the reason behind the corruption issues.  Large size of PST files also slow down your Outlook interface thats why Outlook users should always reduce the size of their PST file.

Outlook provides several methods to reduce the size of large PST file:

Compact: Compact helps to reduce the unwanted white spaces from the emails and reduce the emails size.

Archiving: Archiving is one of the best and easy solution to reduce the file size of Outlook data file.You can also set an auto archive option in Outlook.

Export: Using this option, you can even export and save the PST data into an external drive and use it for further use by simply importing it.

Deleted Unwanted Emails: Always delete unwanted emails or always set protection level high for junk emails in MS-Outlook.

For more: http://www.wikihow.com/Reduce-or-Compact-the-Size-of-an-Outlook-PST-File
Note: Improve community discussions by marking the answers helpful.

Thanks
Clark Kent

• Marked as answer by Steve FanMicrosoft contingent staff, Moderator Monday, May 05, 2014 8:18 AM

Large size PST file is not a big issue, You can effectively manage your large sized PST file into small sizes by using this proficient tool http://www.pstsplit.com which is split the PST file according to date, email address of sender or according to the folder.

You can easily manage your big PST file by using Split PST tool which is capable of supporting all versions of MS Outlook and Windows OS Platforms. For more information, visit here:-

http://www.recoverydeletedfiles.com/split-pst-tool.html

I found one or more website that perfectly recovers Outlook file database including all email attachments and also Split heavy files of Outlook by Date, Size, Year & Folder wise. Read More:- http://www.recoverfilesdata.com/split-pst-file-tool.html

Most effect application that can help you to repair corrupt PST file within few seconds. This Split PST File tool provides you great option to easily split large size PST file into multiple small sizes like 1GB, 2GB, 3GB, 4GB and 5GB without showing any error.

Read more details: http://www.pcrecoverytools.com/split-pst-file-tool.html

There are so many ways for splitting large PST file. Just follow the steps mentioned in here http://www.filerepairtools.com/tips/how-to-split-large-pst-file-safely/ and reduce the size of PST file in no time. 

PST file into smaller part but failed to decide the right way for you? Here in, you should try our advanced Split PST File Tool. Apart from splitting large sized PST file, this software has various other features. When MS Outlook slows down its process due to large size of PST file, the Split PST File software performs better and breaks large size PST files by date, year, size and folder. This remarkable software help the users to work with many versions of MS Outlook as well as it is compatible with different versions of Windows.n case, you are using either Outlook 2002 or the earlier versions, if the storage capacity reached or exceeds 2 GB, it becomes the requirement to break PST file for better performance.FOR FREE recover of data LOG.in here.. http://www.undeletepcfiles.com/split-pst-file.html

You can split the pst file, i mean create one more .pst file and move some old inbox message to it. If you split it you will get 4gb+4gb like or as you create more pst the more less size.