c# sending email operation timed out

Question

MailMessage msg = new MailMessage("[email protected]",        "[email protected]", "Movies this month", "Hello this is a test mail");
msg.IsBodyHtml = false;
SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);
smtp.UseDefaultCredentials = false;
NetworkCredential xre = new System.Net.NetworkCredential("[email protected]", "Password");
smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
smtp.Credentials = xre;
smtp.EnableSsl = true;
smtp.Send(msg);

This is the code i run in a form . load to do a test email but it will not rund and says operation timed out. ive tried everything please help MessageBox.Show("mail sent");

@john 587 for TLS 465 for SSL, according to the documentation? https://support.google.com/a/answer/176600?hl=en — Ross Miller, May 10 '18 at 13:57
Possible duplicate of [c# Send email using visual studio 2015](https://stackoverflow.com/questions/50295545/c-sharp-send-email-using-visual-studio-2015) — Liam, May 14 '18 at 08:12

score 0 · Answer 1 · answered May 10 '18 at 13:55

0

Use the "Timeout" property for your Smtp client . I think 0 is max

 smtp.Timeout = 0;

answered May 10 '18 at 13:55

rmehra76

404
2
10

score 0 · Answer 2 · answered May 10 '18 at 14:40

For better Understanding of the error message try putting your code in a Try-Catch Block and then see the inner exception of the catch in MessageBox.Show(). It might provide you some more information regarding the error and might help/guide you in the right direction to resolve it. Something like below:-

try
{
  //your email sending logic
}
catch(Exception ex)
{
  MessageBox.Show(ex.InnerException.ToString());
}

Cizaphil · Answer 3 · 2018-05-11T12:51:22.913

You should send your mails using background thread, so as to make sure that your UI thread does not block and returns immediately. You can do something like this

 private async void sendButton_Click(object sender, EventArgs e)
        {
            var result = await SendMail();
            if (result)
            {
                MessageBox.Show("Mail sent");
            }
        }

        private Task<bool> SendMail()
        {
            var task = Task.Run<bool>(() =>
            {
                MailMessage msg = new MailMessage("[email protected]", "[email protected]", "Movies this month", "Hello this is a test mail");
                msg.IsBodyHtml = false;

                using(SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587))
                {
                    smtp.UseDefaultCredentials = false;
                    NetworkCredential xre = new NetworkCredential("[email protected]", "Password");
                    smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                    smtp.Credentials = xre;
                    smtp.EnableSsl = true;
                    smtp.Send(msg);

                    return true;
                }

            });
            return task;
        }

ok i tried this code it runs succesfully but i do not receive any emails — Richard Teunen, May 10 '18 at 19:13
You can try it again. I just changed "SendAsync" to "Send" and it works — Cizaphil, May 11 '18 at 12:52

c# sending email operation timed out

3 Answers3