Thanks for your reply 2teez. msg files are outlook files. It has only plain text in the body of the mail. I need to read the body of each msg file. The module Email::Outlook::Message can be used if I am trying to read mail in the outlook. But the mails will be saved in a folder and I need to retrieve the body of mails from the directory. open function will not open the msg files for reading the body of the mail.

..The module Email::Outlook::Message can be used if I am trying to read mail in the outlook. But the mails will be saved in a folder..
Email::Outlook::Message, also parse mail when you are not reading from your Outlook mail directly. i.e with your mails saved in a folder on your local drive.
E.g:

#!/usr/bin/perl -Wl
use strict;

use Email::Outlook::Message;

for my $filename ( glob("$ARGV[0]*") ) {

    ## tell the filename reading
    print 'Filename: ', $filename;

    my $msg  = new Email::Outlook::Message $filename;
    my $mime = $msg->to_email_mime;
    print $mime->as_string;
}
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NOTE: I didn't link the Email::Outlook::Message, I only outlined it here. Others in this thread had it linked already.
And of course, your folder which contain these msg files must be the given from the CLI.
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Hi, how could I tailor this code to print $filename only if the email body contains a certain keyword, such as "training"?