title: Gmail Schemas - Not displaying in inbox
body: <p>I tried to send email from <code>x@gmail.com</code> to <code>x@gmail.com</code> following message (from <a href="https://developers.google.com/gmail/schemas/embedding-schemas-in-emails" rel="nofollow">https://developers.google.com/gmail/schemas/embedding-schemas-in-emails</a>) :</p>
  
  <pre><code>Return-Path: &lt;testing.schema@gmail.com&gt;
  Received: from ns398878.ovh.net ([2001:41d0:8:54ab::1])
          by mx.google.com with ESMTPSA id ei6sm12344329wid.11.1969.12.31.16.00.00
          (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
          Thu, 29 Aug 2013 06:10:15 -0700 (PDT)
  Content-Type: text/html; charset="utf-8"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  Subject: None
  From: automat &lt;testing.schema@gmail.com&gt;
  To: testingschema@gmail.com
  Date: Thu, 29 Aug 2013 13:10:15 -0000
  Message-ID: &lt;20130829131015.29363.95092@ns398878.ovh.net&gt;
  
  
  &lt;html&gt;
    &lt;body&gt;
      &lt;script type="application/ld+json"&gt;
      {
        "@context":             "http://schema.org",
        "@type":                "EventReservation",
        "reservationNumber":    "IO12345",
        "underName": "John Smith",
        "reservationFor": {
          "@type": "Event",
          "name":               "Google I/O 2013",
          "startDate":          "2013-05-15T08:30:00-08:00",
          "location":           "Moscone Center, 800 Howard St., San Francisco, CA 94103"
        }
      }
      &lt;/script&gt;
      &lt;p&gt;
        Dear John, thanks for booking your Google I/O ticket with us.
      &lt;/p&gt;
      &lt;p&gt;
        BOOKING DETAILS&lt;br/&gt;
        Reservation number: IO12345&lt;br/&gt;
        Order for: John Smith&lt;br/&gt;
        Event: Google I/O 2013&lt;br/&gt;
        Start time: May 15th 2013 8:00am PST&lt;br/&gt;
        Venue: Moscone Center, 800 Howard St., San Francisco, CA 94103&lt;br/&gt;
      &lt;/p&gt;
    &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>I think I have done everything correctly, but there is no action button in the inbox.                    </p>