Using Events/Delegates to Subscribe To A Service - Emails, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static int ID;
        //Main program Function
        public static void Main(string[] args)
        {
            Run();
        }
        
        /*public static void CreateEmail()
        {
            ID += 1;
            
            Console.WriteLine("New Email\nEnter Title: ");
            String title = Console.ReadLine();
            
            Console.WriteLine("Enter Subject: ");
            String subject = Console.ReadLine();
            
            Console.WriteLine("Enter Recipient: ");
            String recipient = Console.ReadLine();
            
            Console.WriteLine("Enter Body: ");
            String body = Console.ReadLine();
            
            NewEmail letter = new NewEmail(ID, title, subject, recipient, body);
            
            Run(letter);
        }*/
        
        public static void Run()
        {
            //Email Class Variables
            var letter = new NewEmail(1, "Here's one secret to success", "The only way!", "Shia Le Boeuf", "Just do it!");
            var sendEmail = new NewEmailSend();
            var messageSender = new MessageSender();
            var textSender = new TextSender();
            
            //Subscribing the Email through MessageSender
            sendEmail.EmailEvent += messageSender.OnSend;
            sendEmail.EmailEvent += textSender.OnSend;
            
            //Putting Email through Send Function
            sendEmail.SendingEmail(letter);
        }
    }
    
    //The New Email Class
    public class NewEmail
    {
        //Email Variables
        public int ID {get; set;}
        public String title {get; set;}
        public String subject {get; set;}
        public String receiver {get; set;}
        public String body {get; set;}
        
        //New Email Constructor - Program Passes Email Data Here
        public NewEmail(int ID, String title, String subject, String receiver, String body)
        {
            this.ID = ID;
            this.title = title;
            this.subject = subject;
            this.receiver = receiver;
            this.body = body;
        }
    }
    
    //The Email Sending Process
    public class NewEmailSend
    {
        public event EventHandler<EmailDelegate> EmailEvent;
            
        //When Sending
        public void SendingEmail(NewEmail ne)
        {
            Console.WriteLine("Sending Email...");
            
            OnSend(ne);
        }
        
        //When Sent
        public void OnSend(NewEmail ne)
        {
            if(EmailEvent != null)
            {
                EmailEvent(this, new EmailDelegate() {NewEmail = ne});
            }
        }
    }
    
    //The Email Delegate
    public class EmailDelegate
    {
        public NewEmail NewEmail {get; set;}
    }
    
    //The Subscribed Service - Aka Messanger Message
    public class MessageSender
    {
        public void OnSend(object source, EmailDelegate email)
        {
            Console.WriteLine("Passing Email ID: " + email.NewEmail.ID + " To Message Service");
            SendEmail(email);
            
        }
        
        public void SendEmail(EmailDelegate email)
        {
            
        }
    }
    
    //The Subscribed Service - Aka Text Message
    public class TextSender
    {
        public void OnSend(object source, EmailDelegate email)
        {
            Console.WriteLine("Passing Email ID: " + email.NewEmail.ID + " To Text Service");
            SendEmail(email);
        }
        
        public void SendEmail(EmailDelegate email)
        {
            
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,19 sec, absolute running time: 0,11 sec, cpu time: 0,08 sec, average memory usage: 13 Mb, average nr of threads: 3