Send email with asp.net by using smtp server

using System.Net.Mail;

MailMessage myMail = new MailMessage();
                        SmtpClient smtpclient = new SmtpClient();
                        MailAddress fromadrress = new MailAddress("from mail address");            
                        myMail.From = fromadrress;
                        myMail.Subject = "Your subject";
                        myMail.Body = "Your email Body content";
                        myMail.To.Add("To email address");
                        myMail.Attachments.Add("File path");
                        smtpclient.Host = "smtp.gmail.com";
                        smtpclient.Port = 587;
                        smtpclient.EnableSsl = true;
                        smtpclient.Credentials = new system.Net.NetworkCredential("UserId","Password");
                        smtpclient.Send(myMail);

string email = "email@email.com";
MailMessage ml = new MailMessage();
ml.From = new MailAddress("from@email.com");

ml.To.Add(new MailAddress(email));
ml.Subject = "Subject of email";
ml.Body = "Body of email";
ml.Priority = MailPriority.High;
ml.IsBodyHtml = false;
SmtpClient smtpClnt = new SmtpClient();
smtpClnt.Host = "SMTP Address";
smtpClnt.Send(ml);