C# Windows Form Application - Send email using gmail smtp

Question

I have been trying to create a small program to send email through smtp.gmail.com, but it always prompt me that \"The operation has timed out\". I know there are lots of soluti

Answer 1

Change the port to 587:

try
{
    MailMessage message = new MailMessage();
    SmtpClient smtp = new SmtpClient();

    message.From = new MailAddress("from@gmail.com");
    message.To.Add(new MailAddress("to@gmail.com"));
    message.Subject = "Test";
    message.Body = "Content";

    smtp.Port = 587;
    smtp.Host = "smtp.gmail.com";
    smtp.EnableSsl = true;
    smtp.UseDefaultCredentials = false;
    smtp.Credentials = new NetworkCredential("from@gmail.com", "pwd");
    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
    smtp.Send(message);
}
catch (Exception ex)
{
    MessageBox.Show("err: " + ex.Message);
}