(Node.js) Attach Email as message/rfc822 sub-part to an Email

Demonstrates how to add attach a message/rfc822 email to another email.

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() {

    // In this example, we'll attach an email loaded from a .eml file to a new email.

    var success;

    var fac = new chilkat.FileAccess();
    emlBytes = fac.ReadEntireFile("qa_data/eml/simple.eml");

    var email = new chilkat.Email();
    email.Subject = "This is a test email with an attached email.";
    email.Body = "Test with attached email.";
    email.AddTo("Joe","joe@example.com");
    email.From = "mary@example.com";

    success = email.AttachMessage(emlBytes);

    console.log(email.GetMime());

    // ----------------------------------------------------------------------
    // Alternatively, we could do this:
    var emailToBeAttached = new chilkat.Email();
    success = emailToBeAttached.LoadEml("qa_data/eml/simple.eml");

    var email2 = new chilkat.Email();
    email2.Subject = "This is a test email with an attached email.";
    email2.Body = "Test with attached email.";
    email2.AddTo("Joe","joe@example.com");
    email2.From = "mary@example.com";

    emlBytes2 = emailToBeAttached.GetMimeBinary();
    success = email2.AttachMessage(emlBytes2);

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

    console.log(email2.GetMime());

}

chilkatExample();