(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, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

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();