public class SendEmail

    {

        private string _serverUrl;

        private string _userName;

        private string _userPwd;

        private string _userUrl;

        private string _receiveUrl;

        private string _title;

        private string _body;

        public string ServerUrl

        {

            get { return _serverUrl; }

            set { _serverUrl = value; }

        }

        public string UserName

        {

            get { return _userName; }

            set { _userName = value; }

        }

        public string UserPwd

        {

            get { return _userPwd; }

            set { _userPwd = value; }

        }

        public string UserUrl

        {

            get { return _userUrl; }

            set { _userUrl = value; }

        }

        public string ReceiveUrl

        {

            get { return _receiveUrl; }

            set { _receiveUrl = value; }

        }

        public string Title

        {

            get { return _title; }

            set { _title = value; }

        }

        public string Body

        {

            get { return _body; }

            set { _body = value; }

        }

        public void SendMail(SendEmail email)

        {

            //发送邮件,直接发送带有用户名，密码的邮件，因为密码没有加密。

            System.Net.Mail.SmtpClient client = new SmtpClient(email.ServerUrl);

            client.UseDefaultCredentials = false;

            //下面的用户名密码填写自己在163的用户名密码，也可以修改上面的SMTP服务器

            client.Credentials = new System.Net.NetworkCredential(email.UserName,

email.UserPwd);

            client.DeliveryMethod = SmtpDeliveryMethod.Network;

            //创建MailMessage对象，参数分别为 发件人地址，收件人地址 ，信件标题，信件正文

            System.Net.Mail.MailMessage message = new MailMessage(email.UserUrl,

email.ReceiveUrl, email.Title, email.Body);

            message.BodyEncoding = System.Text.Encoding.Default;    //编码

            message.IsBodyHtml = true; //是否是HTML代码

            try

            {

                client.Send(message);   //发送

            }

            catch

            {

            }

        }

    }

来源于：www.hackbadboy.com  B.B.S.T 信息安全团队