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The way in which you can access the contents of a PST message attachment is determined by the MAPI attachment method applied to the attachment. For example, if the attachment is an embedded OLE object, it uses the
ATTACH_OLE attachment method. KeyView can access message attachments that use the following attachment methods:
ATTACH_BY_VALUE ATTACH_EMBEDDED_MSG ATTACH_OLE ATTACH_BY_REFERENCE ATTACH_BY_REF_ONLY ATTACH_BY_REF_RESOLVE
Attachments using the
ATTACH_OLE attachment methods are extracted automatically when the PST file is extracted. An “attach by reference” method means the attachment is not in Outlook, but Outlook contains an absolute path to the attachment. Before you can extract these types of attachments, you must retrieve the path to access the attachment.
To extract “attach by reference” attachments
ATTACH_BY_REF_RESOLVEmethod by retrieving the MAPI property