I'm not able to set email notification

Hello,

I can't set email notification, the code is the follow:

using System;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(AccessRights = AccessRights.None, AddIndicators = true)]
    public class TESTEMAIL : Robot
    {
        [Parameter(DefaultValue = "Hello world!")]
        public string Message { get; set; }

        protected override void OnStart()
        {
            Print("cBot avviato");
        }

        protected override void OnTick()
        {
            // Handle price updates here
        }

        protected override void OnStop()
        {
            Print("cBot stoppato");
            Notifications.SendEmail("d.asteriti.notification@gmail.com","d.asteriti.notification@gmail.com", "Notifica di stoppazione", "il cbot si è fermato"); 
        }
    }
}

email settings are the following: