Mail sending code

Question

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Net.Mail" %>
<%@ Import Namespace="System.Net" %>
<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            sendmail();
        }
    }
    public void sendmail()
    {
        try
        {
            string subject = Request.Form.GetValues("eSubject")[0].ToString();
            string arriaval_day = Request.Form.GetValues("Arrival_Day")[0].ToString();
            string duratoin = Request.Form.GetValues("Duration")[0].ToString();
            string adults = Request.Form.GetValues("Adults")[0].ToString();
            string hotel = Request.Form.GetValues("hotel")[0].ToString();
            string name = Request.Form.GetValues("Name")[0].ToString();
            string EmailID = Request.Form.GetValues("EmailID")[0].ToString();
            string Phone = Request.Form.GetValues("Phone")[0].ToString();
            string Country = Request.Form.GetValues("Country")[0].ToString();
            string Requirements = Request.Form.GetValues("Requirements")[0].ToString();
            string hReferer = Request.Form.GetValues("hReferer")[0].ToString();
            StringBuilder sbBody = new StringBuilder();
            StringBuilder sbBodyAdmin = new StringBuilder();
            sbBody.Append("<div><p style='padding-left:20px; font-size:20px;'>Thank you for contacting us. Our Executive will contact you shortly." +
                "Your Registration Details are as:</p><div style='width: 70%;' align='center'><table style='width:60%; text-align:left;' border='1px'>" +
                "" +
                "<tr><td style='width:30%'>Name </td><td>" + name + "</td>" +
                "</tr><tr><td style='width:30%'>Email </td><td>" + EmailID + "</td></tr>" +
                "<tr><td style='width:30%'>Phone </td><td>" + Phone + "</td></tr>" +
                "<tr><td style='width:30%'>Country </td><td>" + Country + "</td></tr>" +
                "<tr><td style='width:30%'>Requirements </td><td>" + Requirements + "</td></tr></table></div><br />" +
                "<p style='padding-left:20px; font-size:20px;'>Note: For More Details Please contact us at [email protected] or 022-234532</p></div>");
            MailMessage ms = new System.Net.Mail.MailMessage();
            ms.From = new MailAddress("[e-mail]", "Best");
            ms.To.Add(new MailAddress(EmailID));
            ms.Subject = "Registration for " + subject;
            ms.Body = sbBody.ToString();
            ms.BodyEncoding = Encoding.UTF8;
            ms.IsBodyHtml = true;
            SmtpClient mailclient = new SmtpClient();
            mailclient.Host = "smtp.gmail.com";
            mailclient.Port = 587;
            mailclient.UseDefaultCredentials = false;
            mailclient.EnableSsl = true;
            mailclient.Credentials = new System.Net.NetworkCredential(
                                             "[email protected]",
                                             "abc");
            mailclient.Send(ms);
            Response.Write(EmailID);
            // sending mail to admin
            sbBodyAdmin.Append("<div><p style='padding-left:20px; font-size:20px;'>" +
                "Requested Registration Details are as:</p><div style='width: 70%;' align='center'><table style='width:60%; text-align:left;' border='1px'>" +
                "" +
               "<tr><td style='width:30%'>Name </td><td>" + name + "</td>" +
                "</tr><tr><td style='width:30%'>Email </td><td>" + EmailID + "</td></tr>" +
                "<tr><td style='width:30%'>Phone </td><td>" + Phone + "</td></tr>" +
                "<tr><td style='width:30%'>Country </td><td>" + Country + "</td></tr>" +
                "<tr><td style='width:30%'>Requirements </td><td>" + Requirements + "</td></tr></table></div><br />" +
                "<p style='padding-left:20px; font-size:20px;'></p></div>");
            MailMessage msAdmin = new MailMessage();
            msAdmin.From = new MailAddress(EmailID, name);
            //msAdmin.To.Add(new MailAddress(""));
            msAdmin.To.Add(new MailAddress("[e-mail]"));
           // msAdmin.CC.Add(new MailAddress("[email protected]"));
            msAdmin.Subject = "Registration for " + subject;
            msAdmin.Body = sbBodyAdmin.ToString();
            msAdmin.BodyEncoding = Encoding.UTF8;
            msAdmin.IsBodyHtml = true;
            SmtpClient mailclientAdmin = new SmtpClient();
            mailclientAdmin.Host = "smtp.gmail.com";
            mailclientAdmin.UseDefaultCredentials = false;
            mailclientAdmin.Port = 587;
            mailclientAdmin.EnableSsl = true;
            mailclientAdmin.Credentials = new System.Net.NetworkCredential(
                                             "[email protected]",
                                             "abc");
           mailclient.Send(msAdmin);
          // Response.Redirect("http://findindiatours.com/brand/thanks.asp", false);
        }
        catch (Exception ex)
        {
            //Response.Redirect("http://findindiatours.com/brand/thanks.asp", false);
        }
    }
</script>
<html>
<head>
<title>getting</title>
</head>
<body>
    <form id="form1" runat="server">
    </form>
    </body>
</html>