username = From;
System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(From, Too);
message.Subject = mail_subject;
message.Body = "Your message body";
SmtpClient client = new SmtpClient(smtp.gmail.com, 587);
message.SubjectEncoding = Encoding.UTF8;
message.Priority = System.Net.Mail.MailPriority.Normal;
client.UseDefaultCredentials = false;
NetworkCredential credential = new NetworkCredential(username, password);
client.UseDefaultCredentials = true;
client.Credentials = credential;
try
{
client.EnableSsl = true;
client.Send(message);
}
catch
{
client.EnableSsl = false;
client.Send(message);
}