hi, i tried to cleanup your code 
use strict;      # safety first
use Net::SMTP;

my $hostname = `hostname`;
my $Log_File = "E:\\Backups\\LOGs\\Sync_Import.log";

open( STDOUTSAVE, ">&STDOUT" );    # save the original STDOUT

open( STDOUT, ">>$Log_File" ) or die "Unable to open $Log_File: $!";

# open (Output, "multiutil <cmd>|");
# do not see the nameing; better
open( PIPE, "multiutil <cmd>|" ) or do {

    # save the last open error
    my $err = $!;    
    # set back to saved STDOUT    
    open( STDOUT, ">&STDOUTSAVE" );
    die "Unable to open pipe: $err";
};

my @OutputDetails = map { s!\r?\n!!g; "$_\n" } <PIPE>;

# add the line to the front
unshift @OutputDetails, "This message sent by the Import Process\n\n";

close PIPE;    # close the handle again

Mail_Msg();

# set back to saved STDOUT
open( STDOUT, ">&STDOUTSAVE" );

sub Mail_Msg {
    my $smtp = Net::SMTP->new("mail.company.com");
    $smtp->mail('ALIAS@company.com');
    $smtp->to('ALIAS@company.com');
    $smtp->data();
    $smtp->datasend(" Subject: Job Failure \n ");
    $smtp->datasend(
        <<EOF_MAIL

@OutputDetails

EOF_MAIL
    );

    $smtp->datasend();
    $smtp->quit();
}

[download]
but did not really test it. hope you get the idea.
have fun.

UPDATE: minor code changes

In reply to Re: Printing an array in a Here Doc by esskar
in thread Printing an array in a Here Doc by tmtech1

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