Perl

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.

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Perl

use chilkat();

$success = 0;

#  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 = chilkat::CkEmail->new();

#  Load a multipart/report email (such as a bounce / DSN message).
$success = $email->LoadEml("qa_data/eml/dsn_bounce.eml");
if ($success == 0) {
    print $email->lastErrorText() . "\r\n";
    exit;
}

$n = $email->get_NumReports();
print "NumReports = " . $n . "\r\n";

for ($i = 0; $i <= $n - 1; $i++) {
    print "---- Report " . $i . " ----" . "\r\n";
    print $email->getReport($i) . "\r\n";
}