title: HTML email: font-weight bold in Outlook is not working
body: <p>UPDATE.
  I've tried all the suggestions. But still can't get Outlook to display bold!</p>
  
  <p>UPDATE 2. See my solution below</p>
  
  <p>I'm creating a HTML email newsletter. The <code>&lt;h1&gt;</code> is bold, but when I test in Outlook (2007, 2010, 2013 etc) the font doesn't appear to be bold. Either Outlook is applying a faux bold (fattening) to the regular weight, or ignoring the bold. Whereas all other email clients use the true bold weight of the typeface.</p>
  
  <p>Is there anything I can do? Surely a heading <code>&lt;h1&gt;</code> should be bold by default, without having to write css or put a <code>&lt;strong&gt;</code> or <code>&lt;b&gt;</code> around it?</p>
  
  <p>Here's my code (which gets inlined):</p>
  
  <pre><code>h1 {
  font-family:Arial Bold, Arial, sans-serif;
  font-weight:bold;
  }
  </code></pre>
  
  <p>Perhaps I need to put Arial Bold in quote marks?</p>
  
  <pre><code>font-family:'Arial Bold', Arial, sans-serif;
  </code></pre>
  
  <p>Here are two images. Top is how it should look. Bottom is the Outlook.</p>
  
  <p><a href="https://i.stack.imgur.com/AF2fU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AF2fU.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/Rcy1e.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Rcy1e.png" alt="enter image description here"></a></p>