C#smtp发送邮件

MailMessage mail = new MailMessage();

            mail.Subject = toAddress.Text;

            mail.From = new MailAddress("a@sohu.com");

            mail.To.Add(toAddress.Text);

            mail.Subject = subjectText.Text;

            mail.SubjectEncoding = System.Text.Encoding.UTF8;

            mail.Body = mailRichTextBox.Text;

            mail.BodyEncoding = System.Text.Encoding.UTF8;

            mail.IsBodyHtml = false;

            SmtpClient client = new SmtpClient();

            client.Credentials=new System.Net.NetworkCredential("a@sohu.com","1111");

            client.Host = "pop3.sohu.com";

            try

            {

                client.Send(mail);

                MessageBox.Show("邮件发送成功");

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }