Question

public static bool SendMail(string toList, string from, string ccList, string subject, string body)
{
    MailMessage message = new MailMessage();
    SmtpClient smtpClient = new SmtpClient();

    try
    {
        MailAddress fromAddress = new MailAddress(from);
        message.From = fromAddress;
        message.To.Add(toList);
        if (ccList != null && ccList != string.Empty)
            message.CC.Add(ccList);
        message.Subject = subject;
        message.IsBodyHtml = true;
        message.Body = body;

        smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtpClient.EnableSsl = true;
        smtpClient.Timeout = 30000;
        smtpClient.Host = "smtp.gmail.com";   // We use gmail as our smtp client
        smtpClient.Port = 587;
        smtpClient.UseDefaultCredentials = true;
        smtpClient.Credentials = new System.Net.NetworkCredential("[e-mail]", "mypassword");


        smtpClient.Send(message);
        return true;
    }
    catch (Exception ex)
    {
        return false;
    }
}

The code seems ok, but still not working, I am not able to figure out why?
any other way to use gmail’s smtp to send mail.

Answer 1

try

var client = new SmtpClient("smtp.gmail.com", 587)
{
  Credentials = new NetworkCredential("[e-mail]", "mypwd"),
  EnableSsl = true
};

client.Send("[e-mail]", "[e-mail]", "test", "testbody");

If the UseDefaultCredentials property is set to false, then the value set in the Credentials property will be used for the credentials when connecting to the server. Here you set UseDefaultCredentials as true then it will neglect credentials you given.