namespace Ebase.EmissorNFeWeb.Servicos
{
    public class ServicoEmail
    {

            public static async Task Execute(string Email, string Texto, string Mensagem)
            {
                try
                {
                    MailMessage mailMsg = new MailMessage();

                    // To
                    mailMsg.To.Add(new MailAddress(Email, "Ebase"));

                    // From
                    mailMsg.From = new MailAddress("desenvolvimento@ebasesistemas.com.br", "Ebase");

                // Subject and multipart/alternative Body
                mailMsg.Subject = "subject";
                string text = "text body";
                string html = @"<p>html body</p>";
                mailMsg.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(text, null, MediaTypeNames.Text.Plain));
                mailMsg.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(html, null, MediaTypeNames.Text.Html));

                // Init SmtpClient and send
                SmtpClient smtpClient = new SmtpClient("smtp.sendgrid.net", Convert.ToInt32(587));
                    System.Net.NetworkCredential credentials = new System.Net.NetworkCredential("desenvolvimento@ebasesistemas.com.br", "minhasenha");
                    smtpClient.Credentials = credentials;

                    smtpClient.Send(mailMsg);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
        }
    }

<system.net>
  <mailSettings>
    <smtp from="desenvolvimento@ebasesistemas.com.br">
      <network host="smtp.sendgrid.net" password="minhasenha" userName="Ebase" port="587" />
    </smtp>
  </mailSettings>
</system.net>

[HttpPost]
        [AllowAnonymous]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser {
                    NomeCompleto = model.NomeCompleto,
                    UserName = model.NomeCompleto,
                    Email = model.Email,
                    EmpresaNome = model.EmpresaNome,
                    Telefone = model.Telefone
                };
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)
                {
                    await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
                    // For more information on how to enable account confirmation and password reset please visit https://go.microsoft.com/fwlink/?LinkID=320771
                    // Send an email with this link
                    // string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                    // var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                    // await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href="" + callbackUrl + "">here</a>");

                    string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                    var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                    await ServicoEmail.Execute(model.Email, "Confirme a sua conta", "Confirme a sua conta clicando <a href="" + callbackUrl + "">AQUI</a>");



                    return RedirectToAction("Index", "Home");
                }
                AddErrors(result);
            }
            // If we got this far, something failed, redisplay form
            return View(model);
        }

@{
    ViewBag.Title = "Confirm Email";
}

    <h2>@ViewBag.Title.</h2>
    <div>
        <p>
            Obrigado por confirmar o seu email. Por favor @Html.ActionLink("Clique aqui para fazer o Login", "OnePage", "Home", routeValues: null, htmlAttributes: new { id = "loginLink" })
        </p>
    </div>