Remove a Single Attached Message from an Email

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Demonstrates the Chilkat Email.RemoveAttachedMessage method, which removes the Nth message/rfc822 sub-part (an attached email) from the message. Indexing begins at 0. This example attaches an email, removes it, and prints the attached-message count before and after.

Background: Attached messages (forwarded emails carried as message/rfc822 parts) are counted and indexed separately from ordinary file attachments and related items. RemoveAttachedMessage targets just one nested email by index — useful, for example, when trimming a bundled digest or stripping a forwarded original before re-sending.

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bool success = false;

//  Demonstrates the RemoveAttachedMessage method, which removes the Nth message/rfc822
//  sub-part (attached email) of the email.  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";

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

Debug.WriteLine("NumAttachedMessages before = " + Convert.ToString(email.NumAttachedMessages));

//  Remove the first attached message (index 0).
email.RemoveAttachedMessage(0);

Debug.WriteLine("NumAttachedMessages after = " + Convert.ToString(email.NumAttachedMessages));