What file is PST?

PST files are personal file holds in Microsoft Outlook, and the format of the. pst file in Microsoft Office Outlook 2003 is different from the personal folders (. pst) file in earlier versions of Microsoft Outlook. and the overall size limit has also been relaxed. In Outlook 2002 and earlier versions, the. pst file was in the American National Standards Association (American Nation Standards Institute,ansi) format with a total size limit of 2 GB.

By default, the. pst file in Outlook 2003 is in Unicode format. Also, the overall size limit for the. pst file is greater than the 2 GB size limit for the ANSI. pst file. By default, the size limit for Unicode. pst files is configured to GB in Outlook 2003.