using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Net.Mime;
using System.IO;
using System.Timers;
using System.Xml;
using System.Text.RegularExpressions;
using System.Net;

namespace SendEmail
{
class Program
{
#region 傳送郵件
static void Main(string[] args)
{
Program p = new Program();

        string FromMial = "";
        string ToMial = "";
        string AuthorizationCode = "";
        // string ReplyTo="";
        // string CCMial="";
        string File_Path = "";

        p.SendMail(FromMial, ToMial, AuthorizationCode, null, null, File_Path);
    }

    /// <summary>
    /// 傳送郵件方法
    /// </summary>
    /// <param name="FromMial">發件人郵箱</param>
    /// <param name="ToMial">收件人郵箱(多個收件人地址用";"號隔開)</param>
    /// <param name="AuthorizationCode">發件人授權碼</param>
    /// <param name="ReplyTo">對方回覆郵件時預設的接收地址（不設定也是可以的）</param>
    /// <param name="CCMial">//郵件的抄送者(多個抄送人用";"號隔開)</param>
    /// <param name="File_Path">附件的地址</param>
    public void SendMail(string FromMial, string ToMial, string AuthorizationCode, string ReplyTo, string CCMial, string File_Path)
    {
        try
        {
            //例項化一個傳送郵件類。
            MailMessage mailMessage = new MailMessage();

            //郵件的優先順序，分為 Low, Normal, High，通常用 Normal即可
            mailMessage.Priority = MailPriority.Normal;

            //發件人郵箱地址。
            mailMessage.From = new MailAddress(FromMial);

            //收件人郵箱地址。需要群發就寫多個
            //拆分郵箱地址
            List<string> ToMiallist = ToMial.Split(';').ToList();
            for (int i = 0; i < ToMiallist.Count; i++)
            {
                mailMessage.To.Add(new MailAddress(ToMiallist[i]));  //收件人郵箱地址。
            }

            if (ReplyTo == "" || ReplyTo == null)
            {
                ReplyTo = FromMial;
            }

            //對方回覆郵件時預設的接收地址(不設定也是可以的喲)
            mailMessage.ReplyTo = new MailAddress(ReplyTo);

            if (CCMial != "" && CCMial != null)
            {
                List<string> CCMiallist = ToMial.Split(';').ToList();
                for (int i = 0; i < CCMiallist.Count; i++)
                {
                    //郵件的抄送者，支援群發
                    mailMessage.CC.Add(new MailAddress(CCMial));
                }
            }
            //如果你的郵件標題包含中文，這裡一定要指定，否則對方收到的極有可能是亂碼。
            //mailMessage.SubjectEncoding = Encoding.GetEncoding(587);

            //郵件正文是否是HTML格式
            mailMessage.IsBodyHtml = false;

            //郵件標題。
            mailMessage.Subject = "TEST SENDING EMAIL";
            //郵件內容。
            mailMessage.Body = "THIS IS A TEST OF SENDING EMAIL";

            //設定郵件的附件，將在客戶端選擇的附件先上傳到伺服器儲存一個，然後加入到mail中  
            if (File_Path != "" && File_Path != null)
            {
                //將附件新增到郵件
                mailMessage.Attachments.Add(new Attachment(File_Path));
                //獲取或設定此電子郵件的傳送通知。
                mailMessage.DeliveryNotificationOptions = DeliveryNotificationOptions.OnSuccess;
            }

            //例項化一個SmtpClient類。
            SmtpClient client = new SmtpClient();

            #region 設定郵件伺服器地址

            //在這裡我使用的是163郵箱，所以是smtp.163.com，如果你使用的是qq郵箱，那麼就是smtp.qq.com。
            // client.Host = "smtp.163.com";
            if (FromMial.Length != 0)
            {
                //根據發件人的郵件地址判斷髮件伺服器地址   預設埠一般是25
                string[] addressor = FromMial.Trim().Split(new Char[] { '@', '.' });
                switch (addressor[1])
                {
                    case "163":
                        client.Host = "smtp.163.com";
                        break;
                    case "126":
                        client.Host = "smtp.126.com";
                        break;
                    case "qq":
                        client.Host = "smtp.qq.com";
                        break;
                    case "gmail":
                        client.Host = "smtp.gmail.com";
                        break;
                    case "hotmail":
                        client.Host = "smtp.live.com";//outlook郵箱
                        //client.Port = 587;
                        break;
                    case "foxmail":
                        client.Host = "smtp.foxmail.com";
                        break;
                    case "sina":
                        client.Host = "smtp.sina.com.cn";
                        break;
                    default:
                        client.Host = "smtp.exmail.qq.com";//qq企業郵箱
                        break;
                }
            }
            #endregion

            //使用安全加密連線。
            client.EnableSsl = true;
            //不和請求一塊傳送。
            client.UseDefaultCredentials = false;

            //驗證發件人身份(發件人的郵箱，郵箱裡的生成授權碼);
            client.Credentials = new NetworkCredential(FromMial, AuthorizationCode);


            //如果傳送失敗，SMTP 伺服器將傳送 失敗郵件告訴我  
            mailMessage.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
            //傳送
            client.Send(mailMessage);
            Console.WriteLine("傳送成功");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
            Console.WriteLine("傳送失敗");
        }
    }
    #endregion
}
 

}