If you need to compress Outlook PST files easily, download the MacSonik PST Compress and Compact for Mac. Using this helpful solution users can compress single and multiple large PST files in a single click and save the Outlook data file from corruption. It enables users to reduce PST file size in batch with zero data alteration. Moreover, users can split PST files and save them without any data modification. They can set the desired size of the resultant PST files in MB and GB.