Why Async Method always blocking thread?

Question

I have a method async like this:

public static async Task SendMailAsync(){
...something
}

This method is very long time to return r

Answer 1

There are several background jobs processing library out there. I have used hangfire for some of my projects.

But if you want to make this simple, you can use something built-in inside asp.net.

HostingEnvironment.QueueBackgroundWorkItem((ct) =>
{
     SendMailAsync();
});

OtherMethod1();
OtherMethod2();

Make sure you add reference to System.Web.Hosting

You do not need SendMailAsync() to return a Task since you will not be awaiting on something. Just let the sending of email code run in background.