title: styling tr or td in emails?
body: <p>I want to change whole row cells background-color and font-size. (with <strong>inline-styles</strong>, because I can't use stylesheets or <code>&lt;style&gt;</code> tag)</p>
  
  <p>Which element should I add these styles? I should add them on each <code>&lt;td&gt;</code> in one row or once for <code>&lt;tr&gt;</code> tag? which way is better?</p>
  
  <pre><code>&lt;tr&gt;
      &lt;td style="background-color:red;font-size:12px"&gt;blah blah&lt;/td&gt;
      &lt;td style="background-color:red;font-size:12px"&gt;blah blah&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>or</p>
  
  <pre><code>&lt;tr style="background-color:red;font-size:12px"&gt;
      &lt;td&gt;blah blah&lt;/td&gt;
      &lt;td&gt;blah blah&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>