Set Startup Route for SMS View

Open startup.cs and navigate to the app.UseEndpoints delegate and change Home to Sms in the MapControllerRoute request. It will now look like this:

app.UseEndpoints(endpoints =>
        name: "default",
        pattern: "{controller=Sms}/{action=Index}/{id?}");

How to Receive SMS Delivery Receipts with ASP.NET Core MVC

Delivery receipts allow you to get information about when an SMS is delivered to a user's handset. This tutorial shows how you can receive these delivery receipt notifications in your ASP .NET application.