C#发送邮件

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net.Mail;



namespace SendMessage

{

    class SendEmail

    {



        



        /// <summary>

        /// 使用163发送邮箱

        /// </summary>

        public static void SendMial163()

        {

            MailMessage mailMessage = new MailMessage();

            mailMessage.To.Add("to@qq.com");

            mailMessage.From = new System.Net.Mail.MailAddress("[email protected]");

            mailMessage.Subject = "hello world";

            mailMessage.Body = "这是一封用C#发送的邮件";

            mailMessage.IsBodyHtml = true;

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

            mailMessage.Priority = System.Net.Mail.MailPriority.Normal;



            SmtpClient smtpClient = new SmtpClient();

            smtpClient.Credentials = new System.Net.NetworkCredential(mailMessage.From.Address, "@form-pwd@");

            smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

            smtpClient.Host = "smtp." + mailMessage.From.Host;

            smtpClient.Port = 25;

            smtpClient.Timeout = 3000;

            smtpClient.EnableSsl = false;

            smtpClient.Send(mailMessage);



        }

    



    /// <summary>

    /// 发送GMail

    /// </summary>

    /// <param name="toEmail">客户的邮箱</param>

    /// <param name="FromEmail">我们的邮箱</param>

    /// <param name="pwd">密码</param>

    /// <param name="dispalyName">显示的名称</param>

    /// <param name="subject">标题</param>

    /// <param name="body">内容</param>

    /// <returns></returns>

        public static int SendMailLocalhost(string toEmail,string FromEmail, string pwd,string dispalyName,string subject,string body)

        {

            MailMessage msg = new MailMessage();



            msg.To.Add(toEmail);

          

            /* 

            * msg.To.Add("[email protected]"); 

            * msg.To.Add("[email protected]"); 

            * msg.To.Add("[email protected]");可以发送给多人 

            */

            //msg.CC.Add([email protected]); 

            /* 

            * msg.CC.Add("[email protected]"); 

            * msg.CC.Add("[email protected]");可以抄送给多人 

            */

            //上面这些可以不用管



            msg.From = new MailAddress(FromEmail, dispalyName, System.Text.Encoding.UTF8);

            /* 上面3个参数分别是发件人地址（可以随便写），发件人姓名，编码*/



            msg.Subject = subject;//邮件标题 

            msg.SubjectEncoding = System.Text.Encoding.UTF8;//邮件标题编码 



            msg.Body = body;//邮件内容 

            msg.BodyEncoding = System.Text.Encoding.UTF8;//邮件内容编码 



            msg.IsBodyHtml = true;//是否是HTML邮件 

            msg.Priority = MailPriority.High;//邮件优先级 



            SmtpClient client = new SmtpClient();



            client.UseDefaultCredentials = false;

            client.Credentials = new System.Net.NetworkCredential(FromEmail, pwd);



            //上述写你的GMail邮箱和密码 

            client.Port = 587;//Gmail使用的端口 

            client.Host = "smtp.gmail.com";

            client.EnableSsl = true;//经过ssl加密 



            try

            {

                //client.SendAsync(msg, userState);

                client.Send(msg);

                return 1;

            }

            catch (System.Net.Mail.SmtpException ex)

            {

                return -1;

            }

        }





    }

   

}