title: Gmail api messages/list Q after:{timestamp} doe not work properly
body: <p>Good time!</p>
  
  <p>I'm trying to get the list of message and to filter them I use <code>Q after:{timestamp}</code></p>
  
  <p>I do the following query</p>
  
  <p><a href="https://i.stack.imgur.com/dGCHx.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dGCHx.png" alt="enter image description here"></a></p>
  
  <p>After getting the message id I do a query to get the details of the message:
  <a href="https://i.stack.imgur.com/Zlu2i.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Zlu2i.png" alt="enter image description here"></a></p>
  
  <p>As you can see <code>timestamp</code> in the query and <code>internalDate</code> of the message are the same.</p>
  
  <p>When I increment timestamp value to <code>1559717792</code> and do a query I get the same result:</p>
  
  <p><a href="https://i.stack.imgur.com/pk7ft.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pk7ft.png" alt="enter image description here"></a></p>
  
  <p>In my view, the result should be empty because the <code>internalDate</code> less than <code>1559717792</code>. Is it an issue or is it my mistake? </p>
  
  <p>Thank you!</p>