using System;
using System.Collections.Generic;
using System.Net.Sockets;
using System.Text;
using System.Net.Mail;
using System.Threading;
namespace mail
{
    class Program
    {
        static void Main(string[] args)
        {

            SendMailUseGmail();
            Console.ReadLine();
        }
        public static void SendMailUseGmail()
        {

            System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
            msg.From = new MailAddress("XXXXX@163.com", "foolfire", System.Text.Encoding.UTF8); //发件人地址（可以随便写），发件人姓名，编码*/ 

            msg.Subject = "give your some emails by foolfire1";//邮件标题 
            msg.SubjectEncoding = System.Text.Encoding.UTF8;//邮件标题编码 
            msg.Body = "sdaaaaaaaaaaaaaaaaa";//邮件内容 
            msg.BodyEncoding = System.Text.Encoding.UTF8;//邮件内容编码 
            msg.IsBodyHtml = false;//是否是HTML邮件 
            msg.Priority = MailPriority.High;//邮件优先级 
            SmtpClient client = new SmtpClient();
            //发件邮箱和密码 ,注意这里要与发件人地址的邮箱一致
            client.Credentials = new System.Net.NetworkCredential("XXXXX@163.com", "XXXXXXXXX"); 
            //client.Port = 25;//Gmail使用的端口587 
            //client.EnableSsl = true;//经过ssl加密
            client.DeliveryMethod = SmtpDeliveryMethod.Network;
            client.Host = "smtp.163.com";
            object userState = msg;
            //这里可以随便写什么，只要是规范的email地址
            msg.To.Add("XXXXXX@tom.com");
            try
            {
                /***************************/
                /*请注意SmtpClient类还有两个用于发送Email的方法：
                 * Send()和SendAsync()。Send()方法在它的发送操作完成前阻塞其它的程序执行；
                 * SendAsync()方法异步地发送Email。
                 * 不像Send()方法，SendAsync()方法不必等待检测发送操作是否成功。*/
                /***************************/
                //client.SendAsync(msg, userState);
                ////client.Send(msg);
                //Console.WriteLine("success!");
                System.Threading.Thread.Sleep(100);
                client.Send(msg);
                Console.WriteLine("发送成功!");
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                Console.WriteLine(ex.StackTrace);
            }

        }
    }
}