Yes, splitting a PST based on date can be useful when the mailbox contains several years of email data. For example, you may want to keep older emails in one PST and recent emails in another. This approach can also make archival and mailbox management easier. The exact steps depend on whether you are using Outlook manually or a dedicated PST splitting application. If you have a large amount of data, manually selecting and moving emails can take considerable time. SysTools PST Splitter can be considered when you need to divide PST data according to date-related requirements rather than moving every email individually.