首先添加:using System.Net.Mail;

 代码如下,具体自己处理,以符合你的需求:

  public static bool SendMail(string subject, string body)

   {

            bool result = false;

            try

            {

                    List<string> toMailList =new List<string>(){

                    {"sping@sina.com"},

                    {"springyang@sina.com"}

                    };

                    if (toMailList.Count > 0)

                    {

                        MailMessage mail = new MailMessage();

                        foreach (string address in toMailList)

                        {

                            mail.To.Add(new MailAddress(address));

                        }

                        mail.From = new MailAddress("sping1@sina.com");

                        mail.Subject = subject;

                        mail.Body = body;

                        mail.BodyEncoding = System.Text.Encoding.UTF8;

                        mail.IsBodyHtml = false;

                        SmtpClient client = new SmtpClient();

                        client.Host = 25;

                        client.Port = Convert.ToInt32("8080");

                        client.EnableSsl = True;

                        client.Send(mail);

                        result = true;

                    }

               

            }

            catch (Exception ex)

            {

           

            }

            return result;

        }