Unicode C++

Get Delivery-Status Info as JSON

Demonstrates the Chilkat Email.GetDsnInfo method, which — when IsMultipartReport indicates the email is a multipart/report — obtains the delivery-status information as a JsonObject. This example loads a bounce message, confirms it is a report, and prints the extracted DSN details as JSON.

Background: A bounce (DSN) carries its key facts — which recipient failed, the status code, the reporting server — in a machine-readable message/delivery-status part. Rather than parsing those raw fields yourself, GetDsnInfo gathers them into a structured JSON document you can query with the JsonObject API, making it easy to automate bounce handling and prune failed addresses from a mailing list.

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Unicode C++

#include <CkEmailW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the GetDsnInfo method, which, for a multipart/report email, obtains the
    //  delivery-status information as a JSON object.

    CkEmailW email;

    success = email.LoadEml(L"qa_data/eml/dsn_bounce.eml");
    if (success == false) {
        wprintf(L"%s\n",email.lastErrorText());
        return;
    }

    //  Only meaningful for a multipart/report email.
    if (email.IsMultipartReport() == true) {
        CkJsonObjectW json;
        success = email.GetDsnInfo(json);
        if (success == true) {
            wprintf(L"%s\n",json.emit());
        }

    }
    else {
        wprintf(L"This email is not a multipart/report.\n");
    }

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