Question

This is my first time to write a program that sends mails. I don’t know what to put in the SMTP client constructor :

SmtpClient client = new SmtpClient(????);

Can anybody help?

Answer 1

Always consult the documentation. The SmptClient has three constructors.

SmtpClient()
SmtpClient(String)
SmtpClient(String, Int32)

If you choose the last one, then your code would look like the following, for gmail:

SmtpClient client = new SmtpClient("smtp.gmail.com", 587);

You could also use the first constructor and set properties instead.

SmtpClient smtp = new SmtpClient();
smtp.Port = 587; 
smtp.EnableSsl = true;
smtp.Credentials = new NetworkCredential("<email_from>",  "password");
smtp.Host = "smtp.gmail.com";