How to send Mail using Javascript

You can see this here[^]. It uses Javascript but sends email using Outlook automation.

NO! JavaScript can’t email a form! but, there are alternatives to send the form data to an email address.

See detail here:
http://www.javascript-coder.com/javascript-form/javascript-email-form.phtml[^]

You could create a web service that sends a mail...

[WebMethod]
public void SendEmail(string subject, string message)
{
     // Standard C# Send Mail stuff    
}

Then, you could call the web service from script to send the mail.

Have a look at jquery or other scripting frameworks which provide AJAX helper functionality for calling web service methods

<form method="post" action="">
    <input type="text" id="email" name="name" required>
    <input type="button" value="Send Email" onclick="send()/>
</form>

<script type="text/javascript">
  function send() {
    var link = 'mailto:email@example.com?subject=Message from '
             +document.getElementById('email').value
             +'&body='+document.getElementById('email').value;
    window.location.href = link;
}
</script>