// trying this block of code
            try
            {
                // Looping through the rows in the datatable
                foreach (DataRow Row in dt.Rows)
                {
                    //declaring strings to hold the values
                    string camp_code = Row["Campaign_Code"].ToString();
                    string camp_name = Row["Campaign_Name"].ToString();
                    string comapny_name = Row["company"].ToString();
                    string email_address = Row["email"].ToString();
 
                    //settind txtTo.text to the value in the email string variable
                    txtTo.Text = email_address;
 
                    // Declaring a new instance of a mail message
                    MailMessage E_Mail_Message = new MailMessage();
 
                    //MailAddress MA = new MailAddress("info@place.co.za");
 
                    // Adding the To address to the mail message
                    // The to address is = txtTo.Text
                    E_Mail_Message.To.Add(new MailAddress(txtTo.Text));
 
                    // Setting the body of the email message
                    // The body is = txtMessage.Text
                    E_Mail_Message.Body = txtMessage.Text;
 
                    // Setting the subject of the email message
                    // The subject is = txtSubject.Text
                    E_Mail_Message.Subject = txtSubject.Text;
 
                    // Setting the from address of the email message
                    // The from address is = txtFrom.Text
                    E_Mail_Message.From = new MailAddress(txtFrom.Text);
 
                    // Declaring an instance of a SMTP client
                    SmtpClient SMTP = new SmtpClient("smtp.place.com", 25);
 
 
 
 
                    if (CB_Authentication.Checked == true)
                    {
                        // Setting SMTP Default credentials to false
                        SMTP.UseDefaultCredentials = false;
 
                        // Adding new Credentials
                        System.Net.NetworkCredential theCredential = new System.Net.NetworkCredential(txtUsername.Text, txtPassword.Text);
 
                        // setting smtp credentials to the new credentials
                        SMTP.Credentials = theCredential;
                    }
 
                    if (cboPorts.Text == "SMTP")
                    {
                        SMTP.Port = 25;
                    }
 
                    if (cboPorts.Text == "POP")
                    {
                        SMTP.Port = 110;
                    }
 
                    if (cboPorts.Text == "FTP")
                    {
                        SMTP.Port = 21;
                    }
 
                    if (cboPorts.Text == "HTTP")
                    {
                        SMTP.Port = 80;
                    }
 
                    SMTP.Send(E_Mail_Message);
                    txtTo.Text = "";
                }
 
            }
            catch (Exception EX)
            {
                MessageBox.Show("Sorry it didnt work");
            }
 
}