Java

Count the Report Parts in a multipart/report Email

Demonstrates the read-only Chilkat Email.NumReports property, which is the number of report parts in a multipart/report email. A part is counted as a report when its Content-Type is message/* (except message/rfc822) or text/rfc822-headers. Use GetReport to retrieve the body of each report part; indexes are zero-based. This example loads a report email and prints each report part.

Background: When a message can't be delivered, the mail system usually sends back a bounce known as a Delivery Status Notification (DSN). DSNs use the multipart/report structure, which bundles several parts: a human-readable explanation, a machine-readable message/delivery-status part describing exactly what happened (recipient, status code, failing server), and often the original message's headers. Reading these report parts lets a program automatically detect and process bounces.

Chilkat Java Downloads

Download Chilkat for Java

Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the read-only Email.NumReports property, which is the number of report
        // parts in a multipart/report email (for example, a Delivery Status Notification).
        // Use GetReport to retrieve the body of each report part.  Indexes are zero-based.

        Email email = new Email();

        // Load a multipart/report email (such as a bounce / DSN message).
        try {
            email.loadEml("qa_data/eml/dsn_bounce.eml");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int n = email.getNumReports();
        System.out.println("NumReports = " + n);

        for (int i = 0; i < n; i++) {
            System.out.println("---- Report " + i + " ----");
            System.out.println(email.getReport(i));
        }
    }
}