As of my last update in September 2021, Microsoft Outlook has a maximum PST file size limit, and if your PST file exceeds that limit, you might want to consider splitting it to avoid issues and improve performance. Regain PST Splitter software
Check PST File Size: First, you need to check the current size of your PST file. To do this, open Outlook and navigate to "File" > "Account Settings" > "Account Settings." In the "Data Files" tab, you'll see a list of all the PST files and their sizes.
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