Scapst.exe

MS Outlook is capable to hold large volume of personal data like photos, emails, attachments, notes, journals and other important personal information that you store. All data is stored on the single outlook pst file. As per profile only 1 pst file is created. Earlier before outlook 2003, ANSI PST files were used and store maximum of 2GB. Later Unicode PST file is created and it is capable to store 20 GB which is fine still if the pst file is corrupted then it cost much and hence it is recommended to use Scanpst.exe