using System;
using System.Net.Mail;

namespace Send_Mail
{
    class Program
    {
        static void Main()
        {
            //Set variables accordingly
            string receiver_Mail = "receiver@example.com", sender_Mail = "sender@gmail.com", sender_Password = "123";

            SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
            client.EnableSsl = true;
            client.Credentials = new System.Net.NetworkCredential(sender_Mail, sender_Password);

            client.Send(sender_Mail, receiver_Mail, "subject", "body"); // Set the subject and body of your email

            Console.ReadLine();
        }
    }
}