Send email using ASP.NET

Here is an example with asp.net mvc4 and javascript:

MVC:

public ActionResult SendEmail()
{
    var fromAddress = new System.Net.Mail.MailAddress("[email protected]", "From Name");
    var toAddress = new System.Net.Mail.MailAddress("[email protected]", "To Name");
    const string fromPassword = "fromPassword";
    const string subject = "Subject";
    const string body = "Body";

    var smtp = new System.Net.Mail.SmtpClient
    {
        Host = "smtp.gmail.com",
        Port = 587,
        EnableSsl = true,
        DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network,
        UseDefaultCredentials = false,
        Credentials = new System.Net.NetworkCredential(fromAddress.Address, fromPassword)
    };
    using (var message = new System.Net.Mail.MailMessage(fromAddress, toAddress)
    {
        Subject = subject,
        Body = body
    })
    {
        smtp.Send(message);
    }
    return View("Index");
}

HTML:

<a href="javascript:;" class="btn btn-primary" id="enviar">Enviar</a>

Javascript:

<script type="text/javascript">

        $("#enviar").click(function () {
            $.ajax({
                url: '@Url.Action("SendEmail", "Home")',
                type: 'POST',
                data: { },
                success: function (result) {
                    alert('Um email foi enviado com sucesso');
                }
            });
        });
</script>

Doing in a different way, but using the same methods as the @Spectron response, would look like this:

public ActionResult EnviarEmail(){

 using (var smtp = new SmtpClient())
                    {

                        var message = new MailMessage();
                        message.To.Add(new MailAddress("[email protected]"));
                        message.From = new MailAddress("[email protected] ");
                        message.Subject = "Assunto";
                        message.Body = "Seu Texto Aqui";
                        message.IsBodyHtml = true;
                        var credential = new NetworkCredential
                        {
                            UserName = "[email protected]", 
                            Password = "Senha do E-mail aqui"
                        };
                        smtp.Credentials = credential;
                        smtp.Host = "HOST aqui (ex: smtp.google.com)";
                        smtp.Port = 587; //(Porta aqui)
                        smtp.EnableSsl = true; //(SSL Enable)
                        smtp.Send(message);//Enviar mensagem
                    }
                }
    return View();
}

However, I urge you to use Postal.MVC to submit the submission. In this Link has an example of the project author how to implement, just download the project.