Can't send email through smtp gmail

Question

In C# I try to send email using Gmail. This is my code:

MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

mail.From = new MailAddress("[email protected]");
mail.To.Add("[email protected]");
mail.Subject = "Test Mail";
mail.Body = "This is for testing SMTP mail from GMAIL";

SmtpServer.Port = 465;
SmtpServer.Credentials = new System.Net.NetworkCredential("[email protected]", "mypsw");
SmtpServer.UseDefaultCredentials = false;
SmtpServer.DeliveryMethod = SmtpDeliveryMethod.Network;
SmtpServer.EnableSsl = true;

SmtpServer.Send(mail);

And I get error:

{System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: The connection was closed.
at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)

This answer stackoverflow.com/questions/13506623/… suggests port 587 — Neil

Aleksa Ristic Aleksa Ristic · Accepted Answer · 2019-10-25T14:37:36

There is answer somewhere but i do not recall where so i will write you code below. If someone find answer please put in comment and i will point it there.

var smtpClient = new SmtpClient
{
    Host = "smtp.gmail.com",
    Port = 587, // Port 
    EnableSsl = true,
    Credentials = new NetworkCredential("[email protected]", "yourpw")
};

MailMessage msg = new MailMessage();
msg.IsBodyHtml = true;
msg.Subject = "Subject";

msg.From = new MailAddress("[email protected]");


msg.Body = "Body here";
msg.Bcc.Add(li[i].Value);
smtpClient.Send(msg);

Can't send email through smtp gmail

2 Answers