Combine Outlook PST Files Within Outlook
You can combine multiple Outlook PST (an acronym for Personal Storage Table) files within Outlook. Combining PST files within Outlook is a quick task that works with all versions of Outlook from 2007 up to the current time. It is a two-stage process.
First, you create a brand-new blank PST file. Then import your existing PST files. Here's how it works.
Select your Home tab, then New Items > More Items > Outlook Data Files. Give your blank data file a name and save it.
Now, head to File > Open & Export > Import > Import from another program or file. On the next screen, select Outlook Data File (.pst).
Browse to the PST file you want to import. You now have the option to replace duplicate files, allow the creation of duplicates, or to refuse the import of duplicate files. Your choice here depends on the PST files you are importing. In this example, choose Do not import duplicates. (Please remember that you need the password for each PST file you are importing.)
Once the import completes, you can start the process again to import as many PST files as you want into a single new PST file.
1. Combine Outlook PST Files Within Outlook
Select your Home tab, then New Email > More Items > Outlook Data File.
Now, head to File > Open & Export > Import/Export > Import from another program or file.
On the next screen, select Outlook Data File
Browse to the PST file you want to import.
Hope this helps,
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