title: Trigger not firing on subject line after Outlook gets a new email
body: <p>I'm trying to post a message to a Slack channel each time we receive a confirmed booking via email through Airbnb.</p>
  <p>Tried Zapier, by scanning new emails with the subject &quot;Reservation confirmed&quot; sent to our Microsoft Outlook email. If the email has that subject then the zap should posts its contents (body) in the channel. However, the first step (trigger) doesn't recognize new emails.</p>
  <p>This is what the Zap looks like:
  <img src="https://i.stack.imgur.com/uAS0r.png" alt="This is what the Zap looks like" /></p>
  <p>Step 1: check if a new email is received in Outlook ==&gt; this is the test never passes, because it can't find sample data.
  <img src="https://i.stack.imgur.com/8mGKH.png" alt="Step 1: check if a new email is received in Outlook" /></p>
  <p>Step 2: filter emails that contain the subject Reservation confirmed (in Dutch)
  <img src="https://i.stack.imgur.com/taCoV.png" alt="Step 2: filter emails that contain the subject Reservation confirmed (in Dutch)" /></p>
  <p>Step 3: post a message in a Slack channel
  <img src="https://i.stack.imgur.com/adOpV.png" alt="Step 3: post a message in a Slack channel" /></p>