title: custom emails on VSTS build pass and fail
body: <p>I have a build definition in VSTS. I want to shoot out a mail to participants in following two scenarios</p>
  
  <ol>
  <li><p>if build fails, mail with subject "build failed" and body
  containing which step in definition failed and its explanation.</p></li>
  <li><p>if build succeed, Build success mail</p></li>
  </ol>
  
  <p>Build fail scenarios may include, </p>
  
  <ol>
  <li>stylecop errors,</li>
  <li>Code analysis error,</li>
  <li>test fails,</li>
  <li>codecoverage results,</li>
  <li>or simply build error.</li>
  </ol>