Use the Native or MAPI-based Reader

KeyView accesses PST files in one of two ways:

On UNIX and Windows x64 and IA-64, the native reader is always used to process PST files because the MAPI-based reader only runs on Windows x86. On Windows x86, you can specify either reader, however, the MAPI-based reader is used by default. The differences between the two readers are summarized in the following table:

Feature/Requirement

Native Reader (pstnsr)

MAPI-based Reader (pstsr)

All platforms supported

Yes

Windows x86 only

Outlook client required

No

Yes

MAPI properties supported

Yes

All properties defined in mapitags.h. Object properties are not supported.

Yes

Extracts properties defined in mapitags.h. Object properties are not supported.

Password-protection supported

Yes

Yes (using the setPassword method)

Compressible encryption supported

Yes

Yes

High encryption supported

No

Yes

To specify the MAPI-based reader be used for PST files, change the PST entry in the formats.ini file as follows:

297=pst

To specify the native reader be used for PST files, change the PST entry in the formats.ini file as follows:

297=pstn
NOTE:

You must make sure that the PST that you are extracting is not open in the Outlook client and the Outlook process is not running.

Use the Native PST Reader (pstnsr)

The native PST reader accesses PST files directly without relying on the Microsoft interface to the PST format. It runs on both Windows and UNIX and does not require an Outlook client on the system processing the PST files. However, the native reader does not support password-protected PST files that use high encryption.

Use the MAPI Reader (pstsr)

The pstsr reader accesses PST files indirectly using Microsoft’s Messaging Application Programming Interface (MAPI). MAPI is a standard Windows message interface that enables different mail programs and other mail-aware applications (such as word processors and spreadsheets) to exchange messages and attachments with each other. MAPI allows KeyView to open a PST file, traverse the folders and Outlook items, and extract the items inside the PST file.

NOTE:

When extracting subfiles from PST files, information on the distribution list used in an email is extracted to a file called emailname.dist. This applies to the MAPI reader (pstsr) only.

System Requirements

Because MAPI is only supported on Windows platforms, you can only filter PST files on Windows. Because MAPI relies on functionality in Microsoft Outlook, a Microsoft Outlook client must be installed on the same machine as the application filtering PST files, and must be the default email application. KeyView supports the following PST formats and Outlook clients:

NOTE:

The Outlook client must be the same version as or newer than the version of Outlook that generated the PST file.


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