邮箱发送

MailMessage message = new MailMessage();
message.From = new MailAddress("发送人@qq.com");
message.To.Add(new MailAddress("接收人@qq.com"));
message.Subject = "邮件标题";
message.Body = "邮件内容";
SmtpClient client = new SmtpClient();
client.Host = "smtp.qq.com";
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Credentials = new NetworkCredential("接收人@qq.com", "邮箱授权码");
client.Send(message);
MessageBox.Show("发送成功");

邮箱发送

原文：https://www.cnblogs.com/ACE98K/p/9348316.html