title: Chrome Notifications - Magic Push even when the website is not open
body: <p>I have built a chrome extension in the past and I have used chrome notifications API in that extension so I'm familiar with how it works.</p>
  
  <p>I recently found this website which shows this notifications when something happens but the weirdest part is that even when this website is not opened in any tab it pushes these notifications (as long as chrome is open). I want to know how they do it.</p>
  
  <p>I checked my settings->extensions list to see if I installed their extension somehow but there is none. So where are they running this magic javascript from?</p>
  
  <p>Website is called <a href="https://www.greentoe.com" rel="nofollow">https://www.greentoe.com</a></p>