An old question, probably no longer of interest, asked how large the .pst file could be.

The .pst file has a different format and folder size limit in Outlook 2003 (KB No 830336) describes the limit on file size for the .pst file. It implies that the same 2GB limit is applicable to all Outlook versions prior to Outlook 2003.

How to configure the size limit for both (.pst) and (.ost) files in Outlook 2003 (KB No 832925). Default size for the .pst file for pre-Outlook 2003 versions appears to be at 1.93 GB (only nominally 2 GB).

Just filling in blanks....

John