Perl

Attach an Email to Another Email

Demonstrates the Chilkat Email.AttachEmail method, which attaches a copy of another email to this email object. The attached email is encapsulated in a message/rfc822 subpart. Because a copy is attached, later changes to the source email do not affect the embedded message. This example attaches one email to another.

Background: "Forward as attachment" produces exactly this structure: the original message is embedded whole as a message/rfc822 part rather than quoted into the body. This preserves the original's headers and formatting intact, which matters for forwarding to a mailbox that will re-parse it, or for reporting spam/phishing with the original evidence attached. Such parts are counted by NumAttachedMessages.

Chilkat Perl Downloads

Download Chilkat for Perl

Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# Demonstrates the AttachEmail method, which attaches a copy of another email to this email
# object.  The attached email is encapsulated in a message/rfc822 subpart.

my $innerEmail = Chilkat2::Email->new;
$innerEmail->Subject('Original message');
$innerEmail->From('alice@example.com');
$innerEmail->Body('This is the original message being forwarded.');

my $email = Chilkat2::Email->new;
$email->Subject('FW: Original message');
$email->From('bob@example.com');
$email->Body('See the attached original email.');

# Attach a copy of the inner email as a message/rfc822 part.

my $success = $email->AttachEmail($innerEmail);
if (!$success) {
    print $email->LastErrorText, "\n";
    exit;
}

print 'NumAttachedMessages = ', $email->NumAttachedMessages, "\n";