3 December 2025, 01:28 PM
My Outlook PST file has become very large, and now it is slowing down Outlook and increasing the chances of file corruption. I want to reduce the file size, but I am specifically looking for free methods—no paid tools. Can someone guide me on the best free ways to compress or reduce the size of a PST file in Outlook? Also, if possible, please explain the steps so beginners can follow.