Can I Reduce Outlook Mailbox Size?
 

It is true that you can minimize the size of your inbox by archiving emails or by utilizing the Compact Now tool with an active Outlook profile. However, you should use the PST Splitter Software from RecoveryTools if your Outlook profile is not functioning and you have corrupted, damaged, or inaccessible PST files.

The software supports all forms of PST files exported from any Windows 11, 10, 8, 7 and any earlier versions, and it may quickly import the data automatically from an Outlook profile that is not functioning to Reduce PST File Size without Outlook.

Your PST files can be divided by size, date, and email ID, and the software has many other sophisticated capabilities that increase its potency.