发邮件的邮件体以及记log

 public static bool SendEmail(string sender, string mailSubject, string mailAddress, string mailBody, MailPriority mailPriority = MailPriority.Normal, Attachment mailAttachment = null)
        {
            //var manager = new EmailManager();
            var sw = Stopwatch.StartNew();
            bool isSendSuccess = false;

            try
            {
                isSendSuccess = CommonSendMail(sender, mailSubject, mailAddress, mailBody, mailPriority, mailAttachment);
            }
            catch (Exception ex)
            {
                sw.Stop();
            }

            return isSendSuccess;
        }

        public static bool CommonSendMail(string sender, string mailSubject, string mailAddress, string mailBody, MailPriority mailPriority = MailPriority.Normal, Attachment mailAttachment = null)
        {
            bool isSendSuccess = false;
            MailMessage mail = new MailMessage();
            //local test
            //mail.From = new MailAddress("Admin@xxx.com", sender);
            //SmtpClient mySmtp = new SmtpClient("xxx.xxx.loc");

            //official
            mail.From = new MailAddress("Admin@xxx.com", sender);
            SmtpClient mySmtp = new SmtpClient("xxx.xxx.com");

            string language = string.Empty;
            string sMail = string.Empty;
            string sError = string.Empty;
            const int retryNumber = 3;

            mail.BodyEncoding = Encoding.UTF8;

            #region 设置发件人           
            mail.To.Add(mailAddress);
            #endregion

            #region 设置邮件标题
            //设置邮件标题           
            mail.Subject = mailSubject;
            #endregion

            #region 设置邮件内容               
            mail.IsBodyHtml = true;
            mail.Body = mailBody;
            #endregion

            //设置电子邮件优先级
            mail.Priority = MailPriority.High;

            #region 设置附件
            if (mailAttachment != null)
                mail.Attachments.Add(mailAttachment);
            #endregion

            for (var i = 0; i < retryNumber; i++)
            {
                //发送邮件
                try
                {
                    mySmtp.Send(mail);
                    isSendSuccess = true;
                    break;
                }
                catch (Exception ex)
                {
                    sError = ex.Message;
                    isSendSuccess = false;
                }
                //finally
                //{
                //    //记日志
                //    
                //}
            }

            return isSendSuccess;
        }