UserManager SendEmailAsync No Email Sent

Question

I am using the following code to try to send an email asynchronously, but no email is sent and I am not sure what is being done incorrectly. I have also added the 2nd segme

Answer 1

I think you are using Macrosoft ASP.NET Identity and SMTP email client server. Then your full configuration would be like below :

Web.config

Create a class SmtpEmailService.cs

public class SmtpEmailService : IIdentityMessageService
{
    readonly ConcurrentQueue _clients = new ConcurrentQueue();

    public async Task SendAsync(IdentityMessage message)
    {
        var client = GetOrCreateSmtpClient();
        try
        {
            MailMessage mailMessage = new MailMessage();

            mailMessage.To.Add(new MailAddress(message.Destination));
            mailMessage.Subject = message.Subject;
            mailMessage.Body = message.Body;

            mailMessage.BodyEncoding = Encoding.UTF8;
            mailMessage.SubjectEncoding = Encoding.UTF8;
            mailMessage.IsBodyHtml = true;

            // there can only ever be one-1 concurrent call to SendMailAsync
            await client.SendMailAsync(mailMessage);
        }
        finally
        {
            _clients.Enqueue(client);
        }
    }


    private SmtpClient GetOrCreateSmtpClient()
    {
        SmtpClient client = null;
        if (_clients.TryDequeue(out client))
        {
            return client;
        }

        client = new SmtpClient();
        return client;
    }
}

IdentityConfig.cs

// Configure the application user manager used in this application. 
//UserManager is defined in ASP.NET Identity and is used by the application.
public class ApplicationUserManager : UserManager
{
    public ApplicationUserManager(IUserStore store, IIdentityMessageService emailService)
        : base(store)
    {
        this.EmailService = emailService;
    }

    public static ApplicationUserManager Create(IdentityFactoryOptions options, IOwinContext context)
    {
        var manager = new ApplicationUserManager(new UserStore(context.Get()), new SmtpEmailService());
        .
        .
        .
        .
        return manager;
    }
}

If you are using dependency injection(DI) then configure it. I am using UnityContainer (UnityConfig.cs) so my configuration is :

container.RegisterType();

Finally use it from your controller :

public async Task TestSmtpMail()
{
    var subject = "Your subject";
    var body = "Your email body it can be html also";
    var user = await UserManager.FindByEmailAsync("xxx@gmail.com");
    await UserManager.SendEmailAsync(user.Id, subject, body);
    return Ok();
}

You can get an error something like :

The SMTP server requires a secure connection or the client was not authenticated.

Then Allow less security apps & Allow gmail account making it possible for other apps to gain access

For more details and SendGrid client visit here