Unicode C

Get a Report Part from a multipart/report Email

Demonstrates the Chilkat Email.GetReport method, which returns the body content of the Nth report within a multipart/report email. The NumReports property gives the count, and indexes are zero-based. This example loads a report email and prints each report part.

Background: A multipart/report message — used for bounces (DSNs) and read receipts (MDNs) — bundles machine-readable report parts alongside the human-readable explanation. GetReport returns the raw content of one such part so a program can parse it, for example to extract the failing recipient and status code from a bounce. Use GetDeliveryStatusInfo for direct field-level access to the delivery-status part.

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#include <C_CkEmailW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmailW email;
    int n;
    int i;

    success = FALSE;

    //  Demonstrates the GetReport method, which returns the body content of the Nth report
    //  within a multipart/report email.  The NumReports property gives the number of reports;
    //  indexes are zero-based.

    email = CkEmailW_Create();

    success = CkEmailW_LoadEml(email,L"qa_data/eml/dsn_bounce.eml");
    if (success == FALSE) {
        wprintf(L"%s\n",CkEmailW_lastErrorText(email));
        CkEmailW_Dispose(email);
        return true;
    }

    n = CkEmailW_getNumReports(email);
    wprintf(L"NumReports = %d\n",n);

    for (i = 0; i <= n - 1; i++) {
        wprintf(L"---- Report %d ----\n",i);
        wprintf(L"%s\n",CkEmailW_getReport(email,i));
    }

    //  A report returned by GetReport is the body of a report part -- for a bounce (DSN),
    //  that is the machine-readable message/delivery-status part.  It looks similar to:
    //  
    //    Reporting-MTA: dns; mail.example.com
    //    Received-From-MTA: dns; sender.example.com
    //    Arrival-Date: Fri, 10 Jul 2026 20:15:30 +0000
    //  
    //    Final-Recipient: rfc822; nonexistent@example.com
    //    Action: failed
    //    Status: 5.1.1
    //    Diagnostic-Code: smtp; 550 5.1.1 <nonexistent@example.com> User unknown

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


    CkEmailW_Dispose(email);

    }