Split a PST file into yearly archives / Archive based on year
Can be done using the Archive feature in Outlook. You MUST configure Outlook to archive based on Received date first.
- open the Archive feature (Outlook 2010, File->Cleanup Tools->Archive)
- click on the top level folder to select the entire mailbox rather than the currently selected folder
- set the "Archive items older than:" date to the 1st of January fo the year after you want to create your first archive for (ex. for a 2010 archive, set to January 1st, 2011)
- specify a name and location for your PST file for 2010
- after archiving has finished, repeat the steps but change the date for another year
