title: Html IFrame tag is not being interpret in email body
body: <p>I need to send a html file(which contains a iframe) inside a email body.The html file is working fine in a browser and playing a video.But when i send it inside email body,iframe tag is not getting interpreted so does not show in the body.
  This is html file.</p>
  
  <pre><code>&lt;b&gt;Aman&lt;/b&gt;
  &lt;iframe height="390" frameborder="0" width="640"
  src="http://www.youtube.com/embed/Sf5T5KjMpJU?wmode=transparent"
  title="YouTube video player"&gt;&lt;/iframe&gt;
  </code></pre>
  
  <p>Email body only displaying a "Aman" in bold.This is C# code.</p>
  
  <pre><code>        StreamReader reader = File.OpenText("C:\\Users\\Girish\\Desktop\\amrit\\Jeff_Project\\indeex.html");
          string getemail = textbox_email.Text;
          System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
          message.To.Add(getemail);
          message.Subject = "Hello";
          message.From = new System.Net.Mail.MailAddress("sendingemail");
          //message.Body = "This is message body";
          message.IsBodyHtml = true;
          message.Body = reader.ReadToEnd();
          System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("smtp.gmail.com");
          smtp.Credentials = new System.Net.NetworkCredential("sendingemail", "password");
          smtp.EnableSsl = true;
          smtp.Send(message);
          Response.Write("Sent");
  </code></pre>
  
  <p>Why iframe is not being interpret?Am i missing anything?</p>
  
  <p>Please help and provide solutions.</p>
  
  <p>Thanks in advance.</p>