Package libpst

Utilities to convert Outlook .pst files to other formats

http://www.five-ten-sg.com/libpst/

The Libpst utilities include readpst which can convert email messages
to both mbox and MH mailbox formats, pst2ldif which can convert the
contacts to .ldif format for import into ldap databases, and pst2dii
which can convert email messages to the DII load file format used by
Summation.

General Commands (Section 1)
lspst
lspst is a program that can read an Outlook PST (Personal Folders) file and produce a simple listing of the data (contacts, email subjects, etc).
pst2dii
pst2dii reads the email messages from a MS Outlook .pst file and produces a DII load file that may be used to import message summaries into a Summation DII...
pst2ldif
pst2ldif reads the contact information from a MS Outlook .pst file and produces a .ldif file that may be used to import those contacts into an LDAP database.
readpst
readpst is a program that can read an Outlook PST (Personal Folders) file and convert it into an mbox file, a format suitable for KMail, a recursive mbox...
File Formats (Section 5)
outlook.pst
Low level or primitive items in a .pst file are identified by an I_ID value. Higher level or composite items in a .pst file are identified by a D_ID value...