C#發送Email郵件 （執行個體：QQ郵箱和Gmail郵箱）

下面用到的郵件帳號和密碼都不是真實的，需要測試就換成自己的郵件帳號。

需要引用：
using System.Net.Mail;
using System.Text;
using System.Net;

程式碼：

        MailMessage myMail = new MailMessage(); //建立郵件執行個體對象

        myMail.From = new MailAddress("bluesky@sina.com"); //寄件者，要和郵件伺服器的驗證資訊對應，不能隨便更改
        
        myMail.To.Add(new MailAddress("848594@qq.com")); //接收者

        myMail.Subject = "C#發送Email"; //郵件標題
        myMail.SubjectEncoding = Encoding.UTF8; //標題編碼

        myMail.Body = "this is a test email!"; //郵件內容
        myMail.BodyEncoding = Encoding.UTF8; //郵件內容編碼
        myMail.IsBodyHtml = true;     //郵件內容是否支援html

        SmtpClient smtp = new SmtpClient(); //建立smtp執行個體對象
        smtp.Host = "mail.sina.com"; //郵件伺服器SMTP
        smtp.Port = 25;                  //郵件伺服器連接埠
        smtp.Credentials = new NetworkCredential("bluesky@sina.com", "123456"); //郵件伺服器驗證資訊

        smtp.Send(myMail); //發送郵件

使用Gmail郵箱發送郵件樣本

        MailMessage myMail = new MailMessage();

        myMail.From = new MailAddress("bluesky@gmail.com");
        myMail.To.Add(new MailAddress("444354@qq.com"));

        myMail.Subject = "C#發送Email";
        myMail.SubjectEncoding = Encoding.UTF8;

        myMail.Body = "this is a test email from gmail!<a href='http://www.sina.com.cn'>sina</a>";
        myMail.BodyEncoding = Encoding.UTF8;
        myMail.IsBodyHtml = true;

        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.Port = 587; //Gmail的smtp連接埠
        smtp.Credentials = new NetworkCredential("bluesky@gmail.com", "123456");
        smtp.EnableSsl = true; //Gmail要求SSL串連

        smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //Gmail的發送方式是通過網路的方式，需要指定

        smtp.Send(myMail);

使用QQ郵箱發送郵件樣本

        MailMessage myMail = new MailMessage();

        myMail.From = new MailAddress("4443233@qq.com");
        myMail.To.Add(new MailAddress("bluesky@gmail.com"));

        myMail.Subject = "C#發送Email";
        myMail.SubjectEncoding = Encoding.UTF8;

        myMail.Body = "this is a test email from QQ!";
        myMail.BodyEncoding = Encoding.UTF8;
        myMail.IsBodyHtml = true;

        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.qq.com";
        smtp.Credentials = new NetworkCredential("4443233@qq.com", "123456");

        smtp.Send(myMail);

 

引用自：http://hi.baidu.com/%CA%D8%CD%FB%C0%B6%CC%EC/blog/item/6e5e4d60c9d6776c0d33fa3d.html