title: UTF-8 Subject line appears as question marks in Gmail
body: <p>I am trying to send an email with Chinese characters in the subject line from my program to a gmail account, but the subject line appears as <code>????</code>. This is how the subject line is encoded:</p>
  
  <pre><code>=?utf-8?B?Rlc6IOiri+W5q+aIkee1piDoiIfkvaDotbfkvobnmoTlkIzkuos=?=
  </code></pre>
  
  <p>Is there anything wrong in the encoding? Is there anything that I have to bear in mind? The mail also contains Chinese characters in the body, but those get displayed just fine. I am using base64 to encode the body.</p>