confirmation email in mvc5 - asp.net-mvc

Question

i am new to mvc and i am trying to make confirmation email on registration in mvc5. i have followed sometutorials. lots of them use sendgrid but i want to use smtp. i have done the tutorials step by step by i cant get email after registration. i cant find the problem becuase i have done what i was read in tutorials.
any help is appritiated.
in identityConfig.cs
public class EmailService : IIdentityMessageService
{
public Task SendAsync(IdentityMessage message)
{
// Plug in your email service here to send an email.
//return Task.FromResult(0);
// Credentials:
var credentialUserName = "[myEmail]";
var sentFrom = "[myEmail]";
var pwd = "[myPassword]";
// Configure the client:
System.Net.Mail.SmtpClient client =
new System.Net.Mail.SmtpClient("smtp.gmail.com");
client.Port = 587;
client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
// Create the credentials:
System.Net.NetworkCredential credentials =
new System.Net.NetworkCredential(credentialUserName, pwd);
client.EnableSsl = true;
client.Credentials = credentials;
// Create the message:
var mail =
new System.Net.Mail.MailMessage(sentFrom, message.Destination);
mail.Subject = message.Subject;
mail.Body = message.Body;
// Send:
return client.SendMailAsync(mail);
}
}
public ApplicationUserManager(IUserStore<ApplicationUser> store)
: base(store)
{
this.UserTokenProvider = new TotpSecurityStampBasedTokenProvider<ApplicationUser, string>();
this.EmailService = new EmailService();
}
and in my AccontController.cs
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
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 http://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 here");
return RedirectToAction("Index", "Home");
}
AddErrors(result);
}
// If we got this far, something failed, redisplay form
return View(model);
}
and i havnt change anything else. am i missing something?
thank you very much.