using System.Net;
using System.Net.Mail;
SmtpClient MySmtp = new SmtpClient("smtp.gmail.com",587);
//設定帳號密碼
MySmtp.Credentials = new NetworkCredential("帳號", "密碼");
//smtp 使用 SSL
MySmtp.EnableSsl = true;
MailMessage MMes = new MailMessage();
//內容是不是HTML
MMes.IsBodyHtml = true;
//從哪寄來
MMes.From = new MailAddress("寄的帳號@gmail.com", "Gmail寄",Encoding.UTF8);
//寄件者
MMes.Sender = new MailAddress("寄的帳號@gmail.com ", " Gmail寄", Encoding.UTF8);
//回覆給誰
MMes.ReplyTo = new MailAddress("寄的帳號@gmail.com ", "GGG", Encoding.UTF8);
//標題
MMes.Subject = "Welkin";
MMes.SubjectEncoding = Encoding.UTF8;
//收件者
MMes.To.Add(new MailAddress("Naruto@welkin.com", "漩渦鳴人", Encoding.UTF8));
//內容
MMes.Body = “我是內容”;
//發送
MySmtp.Send(MMes);