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There is no utility that I know of that will compress the user's .PST's from a command line or any other method. &nbsp;The only option is to move the .PST's to a compressed drive on a server.<br />
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The .PST's grow only, and contain a lot of white space. &nbsp;When users delete mail, the file does not shrink, white space is created and new mail arrives it goes 'supposedly'* back into this free space. &nbsp;*There are some known issues with the efficient use of this white space. &nbsp;<br />

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There is no utility that I know of that will compress the user's .PST's from a command line or any other method.  The only option is to move the .PST's to a compressed drive on a server.

The .PST's grow only, and contain a lot of white space.  When users delete mail, the file does not shrink, white space is created and new mail arrives it goes 'supposedly'* back into this free space.  *There are some known issues with the efficient use of this white space.  


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I would like to know if there is a way (an command line utility, for example) for me to compact users´ .PST during logon.<br />

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I would like to know if there is a way (an command line utility, for example) for me to compact users´ .PST during logon.


Compressing .PST

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.