
Open Outlook: To begin, launch Outlook and go to the account that contains the PST file.
Click on the File tab: In the upper left corner of the screen, select the 'File' tab.
Items and Data Files: Select the 'Data Files' tab after selecting 'Account Settings'. This is where your PST file will appear.
Choose and Compress File: Click the 'Settings' option after choosing your PST file. Press the 'Compact Now' button to begin the compression process.[/list][list=][/list]
If you want to do this process more efficiently then you can take the help of Toolsbaer Compress PST tool. This application helps you compress PST files and reduce storage space effectively. By using this tool, you can get additional options and better results that improve the overall performance of Outlook.