(Perl) Access Attached Message (Embedded Email)

How to access an email embedded within another email (i.e. an attached message).

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux

use chilkat();

$email = chilkat::CkEmail->new();

# Load an email from a .eml
$success = $email->LoadEml("embeddedEmail.eml");
if ($success != 1) {
    print $email->lastErrorText() . "\r\n";
    exit;
}

# Display how many attached emails are embedded within
# this one:
$numAttached = $email->get_NumAttachedMessages();
print "numAttached = " . $numAttached . "\r\n";

# Get the 1st attached message.

# email2 is a Email
$email2 = $email->GetAttachedMessage(0);
if ($email->get_LastMethodSuccess() == 1) {

    # Display the subject, From, and a header field...
    print $email2->subject() . "\r\n";
    print $email2->ck_from() . "\r\n";
    print $email2->getHeaderField("X-SOMETHING") . "\r\n";
}