[Solved] ASP.Net: Code executes but Email is not receiving in C#

As your given solution, i tried to send email below followded your link

Export RDLC Report to PDF and send in Email as Attachment using C# and VB.Net in ASP.Net

there is not error is coming, i also debug but code is working fine, email address and credential fine, on Gridview email send

private void LoadReport()
{ 
    con.Open();
    SqlCommand cmd = new SqlCommand("[usp_Attendance_Register]", con);
    cmd.CommandType = CommandType.StoredProcedure;
 
    cmd.Parameters.AddWithValue("@DateFrom", txtDateFrom.Text);
    cmd.Parameters.AddWithValue("@DateTo", txtDateTo.Text);
 
    SqlDataAdapter da = new SqlDataAdapter(cmd);
    DataSet ds = new DataSet();
    da.Fill(ds);
 
    ReportDataSource rds = new ReportDataSource();
    rds.Name = "DataSet1";
    rds.Value = ds.Tables[0]; 
 
    ReportViewer1.LocalReport.DataSources.Clear();
    ReportViewer1.LocalReport.ReportPath = "Timeregistr.rdlc";
    ReportViewer1.LocalReport.DataSources.Add(rds);
 
    ReportViewer1.LocalReport.Refresh(); 
    ReportViewer1.Visible = true;
    con.Close(); 
}

for send email

protected void Email(object sender, EventArgs e)
{
    using (MailMessage mm = new MailMessage("xxxx@gmail.com", "axxx86@gmail.com"))
    {
        mm.Subject = "RDLC Report PDF example";
        mm.Body = "RDLC Report PDF example";
        mm.Attachments.Add(new Attachment(ExportReportToPDF(Server.MapPath("~/Excel/"), "Invoice.pdf")));
        mm.IsBodyHtml = true;
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "mail.sd-usedclothing.com";
        smtp.EnableSsl = true;
        NetworkCredential NetworkCred = new NetworkCredential();
        NetworkCred.UserName = "xx@sd-usexdxxxx.com";
        NetworkCred.Password = "xxxxx";
        smtp.UseDefaultCredentials = false;
        smtp.EnableSsl = false;
        smtp.Credentials = NetworkCred;
        smtp.Port = 25;
        smtp.Send(mm); 
    }
}
 
// Generate repord in a path
private string ExportReportToPDF(string path, string reportName)
{
    Warning[] warnings;
    string[] streamids;
    string mimeType;
    string encoding;
    string filenameExtension;
    byte[] bytes = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out filenameExtension, out streamids, out warnings);
    string filename = path + reportName;
    using (var fs = new System.IO.FileStream(filename, System.IO.FileMode.Create))
    {
        fs.Write(bytes, 0, bytes.Length);
        fs.Close();
    }
 
    return filename;
}