Java

Check Whether an Email Is a multipart/report

Demonstrates the Chilkat Email.IsMultipartReport method, which returns true when the top-level message structure is a multipart/report (such as a bounce/DSN or a read receipt/MDN). This example loads an email and reports whether it is a multipart/report.

Background: Automated mail — delivery failures and read receipts — arrives wrapped in the multipart/report structure, which carries machine-readable report parts. Detecting it with IsMultipartReport is the first step in a bounce-handling pipeline: once you know a message is a report, you can pull its parts with GetReport or read delivery fields with GetDeliveryStatusInfo to act on failures automatically.

Chilkat Java Downloads

Download Chilkat for Java

Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the IsMultipartReport method, which returns true if the top-level message
    //  structure is a multipart/report (such as a bounce / DSN or a read receipt / MDN).

    CkEmail email = new CkEmail();

    success = email.LoadEml("qa_data/eml/dsn_bounce.eml");
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

    if (email.IsMultipartReport() == true) {
        System.out.println("This email is a multipart/report (e.g. a bounce or read receipt).");
        }
    else {
        System.out.println("This email is not a multipart/report.");
        }

    //  Note: The path "qa_data/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.
  }
}