I used Redemption together with Win32::OLE module with strawberry perl to parse emails out of a pst file and save attachements and body to disk.

Here is some rough code to do this

#!perl
use strict;
use Win32::OLE;
use Win32::OLE::Const;
use Win32::OLE::Const 'Microsoft Outlook';
use Data::Dumper;
use Archive::Zip qw( :ERROR_CODES :CONSTANTS );
use IO::File;
use Win32::OLE::Variant;

my $outlook;
eval {
                $outlook = Win32::OLE->GetActiveObject('Outlook.Applic
+ation')
};
if ($@ || !defined($outlook)) {
                $outlook = Win32::OLE->new('Outlook.Application', sub 
+{$_[0]->Quit;})
                                or die("Cannot create outlook\n");
}

my $namespace = $outlook->GetNamespace('MAPI');

# get the proper pst file
my $folder = $namespace->{'Folders'}{'somepst'};

# now get the folder within the pst file
my $folder2 = $folder->{'Folders'}{"dailyfolder"};

# get all the messages
my $msgs = $folder2->{Items}; 
my $ncon = $msgs->{Count}; 
  print "number of contacts - $ncon\n\n"; # this works 

my $app = new Win32::OLE('Redemption.SafeMailItem');
my $con; 
my $at;
my $fn;
my $obase = 'C:\strawberry\perl\daily\\';
my $out;
my $po = {};
foreach my $ii (1 .. $ncon) { 
  $con = $msgs->Item($ii); 
  $app->{'Item'} = $con;
  #print_body($app->{Body});
  #find_data($app->{Body},$ii,$t);
  $at = $app->{'Attachments'}; 
  print "\n\n Attachment count\n";
  print $at->{Count} . "\n";
  $fn = $at->Item(1)->{FileName};
  print "filename is $fn\n" if $fn;
  $out = $obase . $fn;
  if(!-e $out) {
                $at->Item(1)->SaveAsFile($out);
                print "SAVING ATTACHMENT TO  $out\n";  
  }
  $po->{$out}++;
}  

my $z = Archive::Zip->new();
my $i = 1;
my $fh;
my $fl;
my $exf = {};
my $he = 0;
foreach my $zf (keys %$po) {
                warn("processing $zf\n");
                unless( $z->read($zf) == AZ_OK) {
                                die("ERROR READING $zf\n");
                }
                foreach my $m ($z->memberNames()) {
                                warn("processing member $m\n");
                                if(! -e "$obase$m") {
                                $fh = IO::File->new("$obase$m",">") or
+ die($!);
                                $fl = $z->memberNamed($m);
                                $fl->extractToFileHandle($fh);
                                $fh->close() if $fh;
                                if($m =~ /\.xls$/) {
                                 $exf->{"$obase$m"}++;
                                 $he++;
                                }
                                next;
                                }
                }
}
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