Objective-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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Objective-C

#import <CkoEmail.h>
#import <CkoJsonObject.h>

BOOL success = NO;

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

CkoEmail *email = [[CkoEmail alloc] init];

success = [email LoadEml: @"qa_data/eml/dsn_bounce.eml"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

//  Only meaningful for a multipart/report email.
if ([email IsMultipartReport] == YES) {
    CkoJsonObject *json = [[CkoJsonObject alloc] init];
    success = [email GetDsnInfo: json];
    if (success == YES) {
        NSLog(@"%@",[json Emit]);
    }

}
else {
    NSLog(@"%@",@"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.