title: How to allow gmail to recoginze ics attachments
body: <p>I'm trying to attach an ics calender event to an email via a PHP script. When the email is received, the attachment is present, but gmail does not provide the "Agenda" preview or "add to calendar" link.</p>
  
  <p>The Content-Type is text/calendar and the event looks like:</p>
  
  <pre><code>BEGIN:VCALENDAR
  VERSION:2.0
  METHOD:REQUEST
  PRODID:-//Foo//Bar//EN
  BEGIN:VEVENT
  SUMMARY:This is the summary
  ORGANIZER;CN=Common Name:MAILTO:email@example.com
  LOCATION:Place
  UID:5025023356309823
  DTSTART:20141110T100000Z
  DTEND:20141110T140000Z
  END:VEVENT
  END:VCALENDAR
  </code></pre>
  
  <p>I've seen, and tried, several suggestions to modify various fields in the invite without making any progress. I know the event is valid, however, because when I manually attach it to an email (sent from gmail) the event details and calendar link are present in the email.</p>
  
  <p>Does anyone know what's necessary for gmail to recognize the invite and display the event details in the body of the email?</p>