title: pip install pyzmail ERROR message
body: <p>I use Python 3.5.2.
  I installed imapclient with no problem <code>pip install imapclient</code>. However when I tried to install pyzmail, <code>pip install pyzmail</code>, I received error message below: </p>
  
  <pre><code>    ImportError: No module named '_markerlib'
      ----------------------------------------
  Command "python setup.py egg_info" failed with error code 1 in C:\Users\J
  \AppData\Local\Temp\pip-build-ntukh55u\distribute\
  </code></pre>