title: How to read an HTML file and replace with our characters
body: <p>I have an HTML file template which is used for mailing purpose here in the template.</p>
  <pre><code>Hi XXX,
  Thanks for joing in the Club, your ClubcardNo is : XXXXX
  
  Thanks
  </code></pre>
  <p>Here now in the code I need to replace this XXXX with name and clubcard no:</p>
  <pre><code>name:Kiran
  clubcard no: 23453
  </code></pre>
  <p>How can I get this done?</p>