@splitpsttool
The best software available for dividing Outlook PST files into reasonable chunks and smaller bits is the Softaken Split PST Tool. It separates Outlook files in several ways, including folders, year, and size. All PST items, emails, attachments, contacts, notes, events, notes, tasks, etc., can be divided by users. MS Outlook and Windows OS are compatible with this software. To learn more, investigate the free demo version before buying it.