PHP ActiveX

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.

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<?php

$success = 0;

//  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.

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

$email = new COM("Chilkat.Email");
$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.

$success = $email->AttachEmail($innerEmail);
if ($success == 0) {
    print $email->LastErrorText . "\n";
    exit;
}

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

?>