Control not hitting SendAsync function of Custom EmailService : MVC Email confirmation - asp.net-mvc

Question

I have created a new MVC Project in Visual Studio 2013. I noticed that the IdentityConfig.cs file was missing. I have heard that Microsoft removed it from newer versions of ASP.NET Identity. This file, when present, used to define the EmailService class.
So I implement my own EmailService class. The code looks like this
//EmailService.cs
public class EmailService : IIdentityMessageService
{
public async Task SendAsync(IdentityMessage message)
{
await configGMailAsync(message);
}
private static async Task configGMailAsync(IdentityMessage message)
{
//mailing code
}
}
In my AccountController, I have the following Register method, which makes a call to UserManager.SendEmailAsync() method.
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser() { UserName = model.UserName };
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
await SignInAsync(user, isPersistent: false);
var provider = new DpapiDataProtectionProvider("myAppName");
UserManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(provider.Create("EmailConfirmation"));
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>");
return RedirectToAction("Index", "Home");
}
else
{
AddErrors(result);
}
}
// If we got this far, something failed, redisplay form
return View(model);
}
However, after the call to UserManager.SendEmailAsync(), the control (debugger) never hits the SendAsync() function of EmailService class.
I have another project where the IdentityConfig.cs was automatically added on project creation. There, after the call to UserManager.SendEmailAsync(), the control hits the SendAsync() function.
What am I missing here?

Answer 1

Turns out that you have to register your Service with the UserManager class before you send the mail. Upon adding the following line just above UserManager.SendEmailAsync(), the SendAsync() function is picked up successfully:
UserManager.EmailService = new EmailService();
Here is the full function including the newly added line
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser() { UserName = model.UserName };
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
await SignInAsync(user, isPersistent: false);
var provider = new DpapiDataProtectionProvider("myAppName");
UserManager.UserTokenProvider = new DataProtectorTokenProvider<ApplicationUser>(provider.Create("EmailConfirmation"));
string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
var callbackUrl = Url.Action("ConfirmEmail", "Account",
new { userId = user.Id, code = code },
protocol: Request.Url.Scheme);
UserManager.EmailService = new EmailService();
await UserManager.SendEmailAsync(user.Id,
"Confirm your account", "Please confirm your account by clicking <a href=\""
+ callbackUrl + "\">here</a>");
return RedirectToAction("Index", "Home");
}
else
{
AddErrors(result);
}
}
// If we got this far, something failed, redisplay form
return View(model);
}

Answer 2

I created a new Web API 2 project with individual user accounts in VS 2017. There IdentityConfig.cs was present but it did not have an EmailService class. If this is the case and you do not wan't to write UserManager.EmailService = new EmailService(); every time you wan't to use this feature you can add it here instead.
public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
{
var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
manager.EmailService = new EmailService();