title: .ics file isn't displayed as Calendar event in Outlook
body: <p>I've created a .ics file using iCal .Net. Now i'm trying to send it.</p>
  <p>When i'm sending it from my Outlook account to another outlook account, it's displayed as an email with attachment (not as a calendar event).</p>
  <p><a href="https://i.stack.imgur.com/nyaX8.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nyaX8.png" alt="From outlook to outlook" /></a></p>
  <p>However when i'm sending this file from my outlook account to an gmail email address and open it in gmail i see the calendar event.</p>
  <p><a href="https://i.stack.imgur.com/aNrag.png" rel="noreferrer"><img src="https://i.stack.imgur.com/aNrag.png" alt="Gmail calendar event" /></a></p>
  <p>Also when i'm sending this file from gmail to outlook the file is displayed as calendar event too.</p>
  <p><a href="https://i.stack.imgur.com/Z1a4t.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Z1a4t.png" alt="Calendar event from gmail to outlook" /></a></p>
  <p>What could be the reason? Why .ics file which is sent from outlook to outlook is not shown as calendar event?</p>