Get an Attached Message as an Email Object

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Demonstrates the Chilkat Email.GetAttachedEmail method, which copies the Nth embedded message/rfc822 MIME part into another Email object. The index is zero-based (valid values run from 0 through NumAttachedMessages - 1). This example attaches an email and then extracts it back into its own object.

Background: When a message forwards another email as an attachment, that nested message is a complete email in its own right. GetAttachedEmail turns it back into a fully navigable Email object so you can read its subject, sender, body, and even its own attachments — essential for processing forwarded mail, or for tools that unpack reported spam/phishing to examine the original.

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bool success = false;

//  Demonstrates the GetAttachedEmail method, which copies the Nth embedded message/rfc822
//  MIME part into another Email object.  The index is zero-based.

//  Build an inner email and attach it to an outer email.
Chilkat.Email innerEmail = new Chilkat.Email();
innerEmail.Subject = "Embedded message";
innerEmail.From = "alice@example.com";
innerEmail.Body = "This is the embedded message.";

Chilkat.Email email = new Chilkat.Email();
email.Subject = "Has an attached message";
success = email.AttachEmail(innerEmail);
if (success == false) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

//  Copy the first embedded message (index 0) into its own Email object.
Chilkat.Email attached = new Chilkat.Email();
success = email.GetAttachedEmail(0,attached);
if (success == false) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

Debug.WriteLine("Attached email subject: " + attached.Subject);
Debug.WriteLine("Attached email from: " + attached.From);