C#發送Email郵件（執行個體：QQ郵箱和Gmail郵箱）

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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(""); //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("")); //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("", "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("");        myMail.To.Add(new MailAddress(""));        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("", "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("");        myMail.To.Add(new MailAddress(""));        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("", "123456");        smtp.Send(myMail);