title: Open .eml file in compose mode in any client
body: <p>I have composed a mail and stored as .eml file. I need to open this .eml file in compose mode with default email client application configured in the system. </p>
  
  <p>Its getting opened in read mode. I went through all threads in stackoverflow. Everyone's solution is adding header X-Unsent: 1. Though I add this header in .eml file, It is getting opened in read mode. Am I missing anything here?</p>
  
  <pre><code>X-Unsent: 1
  To: "Manikandan TK" &lt;manirulz88@gmail.com&gt;
  Subject: Test
  Date: Wed, 26 Apr 2017 08:56:52 +0000
  Message-Id: &lt;em206d8b63-c287-48b1-93ae-b9ac686e1bc7@jamshedpur&gt;
  Mime-Version: 1.0
  Content-Type: multipart/alternative;
  boundary="------=_MB56B3DE95-5830-47CE-BE69-82C5C00F1F9A"
  </code></pre>