[C#]MailMessage郵件寄送送

MailAddress from = new MailAddress("寄件者郵件地址", "寄件者顯示的名稱", System.Text.Encoding.UTF8);
MailAddress to = new MailAddress("收件者郵件地址");
MailMessage message = new MailMessage(from , to );
message.IsBodyHtml = true;
message.BodyEncoding = System.Text.Encoding.UTF8; //E-mail編碼
message.Subject = "主旨";
message.Body = body; //E-mail內容

SmtpClient smtpClient = new SmtpClient("郵件伺服器", prot);
smtpClient.Credentials = new System.Net.NetworkCredential("帳號", "密碼");
//若不需要帳號密碼的可省略，是否可省略要看Mail Server設定是否一定要驗證

smtpClient.Send(message);

提醒：記得要加上using System.Net.Mail;