(Node.js) Create DSN (Delivery Status Notification) Email

See more Email Object Examples

Note: This example requires Chilkat v11.0.0 or greater.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var email = new chilkat.Email();

    email.Subject = "Test";
    email.From = "joe@example.com";
    email.Body = "This is a test";
    email.AddTo("","recipient@example.com");

    console.log(email.GetMime());
    console.log("");
    console.log("-------------------------------------------------------------");
    console.log("");

    // This is the email we just created:

    // MIME-Version: 1.0
    // Date: Mon, 12 May 2025 11:13:15 -0500
    // Message-ID: <917FA49F75544EF51948B0A52F403B925B51073F@SLICE>
    // Content-Type: text/plain; charset=us-ascii; format=flowed
    // Content-Transfer-Encoding: 7bit
    // X-Priority: 3 (Normal)
    // Subject: Test
    // From: joe@example.com
    // To: recipient@example.com
    // 
    // This is a test

    // -----------------------------------------------------------------
    // Convert the above email into a DSN (Delivery Status Notification)

    var xml = new chilkat.Xml();
    xml.Tag = "DeliveryStatusFields";
    xml.NewChild2("Final-Recipient","rfc822; recipient@example.com");
    xml.NewChild2("Action","failed");
    xml.NewChild2("Status","5.1.2");
    xml.NewChild2("Diagnostic-Code","smtp; 550 5.1.2 Host unknown (Domain name not found)");
    var dtNow = new chilkat.CkDateTime();
    dtNow.SetFromCurrentSystemTime();
    xml.NewChild2("Last-Attempt-Date",dtNow.GetAsRfc822(true));

    var headerOnly = true;
    var sbText = new chilkat.StringBuilder();
    sbText.Append("This is an automatically generated Delivery Status Notification.\r\n\r\n");
    sbText.Append("Delivery to the following recipient failed permanently:\r\n\r\n");
    sbText.Append("    recipient@example.com\r\n\r\n");
    sbText.Append("Technical details of permanent failure:\r\n");
    sbText.Append("DNS Error: Domain name not found\r\n");

    var explain = sbText.GetAsString();

    var dsnEmail = new chilkat.Email();
    var success = email.ToDsn(explain,xml.GetXml(),headerOnly,dsnEmail);
    if (success == false) {
        console.log(email.LastErrorText);
        return;
    }

    console.log(dsnEmail.GetMime());

    // Here's the MIME of the DNS email we just created:
    // -------------------------------------------------

    // Content-Type: multipart/report; report-type="delivery-status"; boundary="------------060100020300020303000802"
    // 
    // --------------060100020300020303000802
    // Content-Type: text/plain; charset=windows-1252; format=flowed
    // Content-Transfer-Encoding: 7bit
    // 
    // This is an automatically generated Delivery Status Notification.
    // 
    // Delivery to the following recipient failed permanently:
    // 
    //     recipient@example.com
    // 
    // Technical details of permanent failure:
    // DNS Error: Domain name not found
    // 
    // --------------060100020300020303000802
    // Content-Type: message/delivery-status
    // 
    // Final-Recipient: rfc822; recipient@example.com
    // Action: failed
    // Status: 5.1.2
    // Diagnostic-Code: smtp; 550 5.1.2 Host unknown (Domain name not found)
    // Last-Attempt-Date: Mon, 12 May 2025 11:30:39 -0500
    // 
    // --------------060100020300020303000802
    // Content-Type: text/rfc822-headers; charset=windows-1252
    // 
    // MIME-Version: 1.0
    // Date: Mon, 12 May 2025 11:30:39 -0500
    // Message-ID: <B8E6875D582A78AE779FC0B46ACC8C858CEAF608@SLICE>
    // Content-Type: text/plain; charset=us-ascii; format=flowed
    // Content-Transfer-Encoding: 7bit
    // X-Priority: 3 (Normal)
    // Subject: Test
    // From: joe@example.com
    // To: recipient@example.com
    // --------------060100020300020303000802--

}

chilkatExample();