string strUserName = ""//邮箱用户名

            string strPassword = ""//邮箱密码

            string strSmtpServer = ""//邮箱服务器

            string strFrom = ""//发送人邮箱地址

            string ccEmail = ""//抄送邮箱地址

          

                SmtpClient mail = new SmtpClient();

                //发送方式

                mail.DeliveryMethod = SmtpDeliveryMethod.Network;

                //smtp服务器

                mail.Host = strSmtpServer;

                //用户名凭证              

                mail.Credentials = new System.Net.NetworkCredential(strUserName, strPassword);

                //邮件信息

                MailMessage message = new MailMessage();

                //发件人

                message.From = new MailAddress(strFrom);

                //收邮件人

                message.To.Add(UserMail);

                //抄送人

                message.CC.Add(ccEmail);

                //主题

                message.Subject = Subject;

                //内容

                message.Body = EmailMsg;

                //正文编码

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

                //设置为HTML格式

                message.IsBodyHtml = true;

                //优先级

                message.Priority = MailPriority.High;

                mail.Send(message);