title: String to html element in email
body: <p>I have a string which includes html elements. For example:</p>
  
  <p><code>var thisString = "This string has html elements like &lt;b&gt;bold&lt;/b&gt; and &lt;u&gt;underline&lt;/u&gt;";</code></p>
  
  <p>I am trying to use this string in an email so that the word bold is actually bold and underline is underlined, rather than displayed as a string.</p>
  
  <p>gs script file:                                                                                                                                                                                                                    </p>
  
  <pre><code>var template = HtmlService.createTemplateFromFile('Email');                                                                                                                                                                                                         
  template.message = thisString;
  var message = template.evaluate();
  MailApp.sendEmail({
        to: toEmail,
        subject: 'Subject',
        htmlBody: message.getContent()
  });
  </code></pre>
  
  <p>html file:</p>
  
  <pre><code>&lt;html&gt;
  &lt;?=message?&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>The email is sent with body exactly as the string.</p>