Objective-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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Objective-C

#import <CkoEmail.h>

BOOL success = NO;

//  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.

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

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

int n = [email.NumReports intValue];
NSLog(@"%@%d",@"NumReports = ",n);

int i;
for (i = 0; i <= n - 1; i++) {
    NSLog(@"%@%d%@",@"---- Report ",i,@" ----");
    NSLog(@"%@",[email GetReport: [NSNumber numberWithInt: 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.