How to stop Mail triggering in Elmahcore when HttpStatusCode value is 401 UnAuthorized about elmahcore HOT 3 CLOSED

services.AddElmah(options =>
{
            options.Path = @"elmah";
            options.LogPath = "~/logs";               
            options.Notifiers.Add(new ErrorMailNotifier("Email", emailOptions));
            options.Filters.Add(new DemoFilter());
});

...
 public class DemoFilter : IErrorFilter
    {
        private bool _dismissAll = false;
        public void OnErrorModuleFiltering(object sender, ExceptionFilterEventArgs args)
        {
            if (_dismissAll || args.Exception is UnauthorizedAccessException)
            {
                _dismissAll = true;
                args.DismissForNotifiers(new[] {"Email"});
            }
        }
    }