ASP.NET

SmtpClient client = new SmtpClient("smtp.gmail.com", 465);
                MailMessage mail_msg = new MailMessage();

                MailAddress fromAdd = new MailAddress(tbFrom.Text.Trim());
                mail_msg.From = fromAdd;
                mail_msg.To.Add(new MailAddress(tbTo.Text.Trim()));
                mail_msg.Subject = tbSubject.Text;
                mail_msg.IsBodyHtml = true;
                mail_msg.Body = "Message From: " + tbFrom.Text.Trim() + "Subject:" + tbSubject.Text.Trim() + "Email: " + tbTo.Text.Trim() + "Content: " + tbContent.Text.Trim();

                System.Net.NetworkCredential basicCredential = new System.Net.NetworkCredential(tbFrom.Text, "my password");
                client.EnableSsl = true;
                client.UseDefaultCredentials = false;
                client.Credentials = basicCredential;
                client.Send(mail_msg);

DataTable dt = new DataTable();

     dt.Columns.Add();
     dt.Columns[0].ColumnName = "User Name";
     dt.Columns.Add();
     dt.Columns[1].ColumnName = "User Email";

     foreach (GridViewRow row in SearchGrid.Rows) // SearchGrid is the name of the Grid.
     {

         DataRow dr = dt.NewRow();
         dr["User Name"] = row.Cells[1].Text;
         dr["User Email"] = row.Cells[2].Text;
         dt.Rows.Add(dr);
     }