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You can easily split the large PST files into small pieces in a matter of minutes. There are many tools for splitting large PST files, but I would recommend using the Split PST for Mac to split large PST files into small parts based on the date, size, year, and folder. This tool is fully capable of splitting all MS outlook items such as emails, folders, contacts, calendars, journals, etc. This software supports all Mac OS versions.
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The best way to split large PST files into smaller ones, with the Outlook PST split tool you can split the large PST files in bulk. A user can split several PST file items like Contacts, Calendar, Notes, Journals, etc. The tool is highly flexible and provides several splitting PST files options to split selected PST files like size, date, and email id. Compatible with all MS Outlook and Windows versions and is 100% safe and secure.
Click File > Info, and into right section, click Cleanup Tools > Archive.In the Archive dialog, check Archive this folder and all subfolders option first, ...Click OK. A PST file which include data early than 1/1/2016 has been created, just rename it as 2015.