C# 发送邮件功能实现

邮件发送功能在OA以及一些网站验证中很常用。下面是邮件发送的一个函数，参数传入收件人地址，邮件主题，邮件内容，读者可根据自己的需求添加邮件的附件或者抄送人等。 

      /// <summary>
        /// 发送邮件
        /// </summary>
        /// <param name="mailTo">要发送的邮箱</param>
        /// <param name="mailSubject">邮箱主题</param>
        /// <param name="mailContent">邮箱内容</param>
        /// <returns>返回发送邮箱的结果</returns>
        public static bool SendEmail(string mailTo, string mailSubject, string mailContent)
        {
            // 设置发送方的邮件信息,例如使用网易的smtp
            string smtpServer = System.Configuration.ConfigurationManager.AppSettings["smtpServer"]; //SMTP服务器
            string smtpMail = System.Configuration.ConfigurationManager.AppSettings["smtpMail"]; ; //登陆用户名
            string userPassword = System.Configuration.ConfigurationManager.AppSettings["smtpPassword"]; ;//登陆密码

            // 邮件服务设置
            SmtpClient smtpClient = new SmtpClient();
            smtpClient.Port = 2525;
            smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式
            smtpClient.Host = smtpServer; //指定SMTP服务器
            //smtpClient.Credentials = new System.Net.NetworkCredential(mailFrom, userPassword,"ZT158");//用户名和密码

            var Cred = new System.Net.NetworkCredential(smtpMail, userPassword);
            Cred.Domain = "ZT158";
            smtpClient.Credentials = Cred;

            // 发送邮件设置        
            MailMessage mailMessage = new MailMessage(smtpMail, mailTo); // 发送人和收件人
            mailMessage.Subject = mailSubject;//主题
            mailMessage.Body = mailContent;//内容
            mailMessage.BodyEncoding = Encoding.UTF8;//正文编码
            mailMessage.IsBodyHtml = true;//设置为HTML格式
            mailMessage.Priority = MailPriority.Low;//优先级

            try
            {
                smtpClient.Send(mailMessage); // 发送邮件
                return true;
            }
            catch (SmtpException ex)
            {
                NLog.LogManager.GetLogger("SendEmail").Error(ex);
                return false;
            }
        }
    }