title: Send mails in background without cron
body: <p>I was wondering if there is a way to run a PHP loop in order to send a few hundred emails to subscribers in background. My goal is to format the newsletter, click send and then close the browser or change page. Of course, the actual process of sending the e-mail will be running in background and would not be interrupted by the browser closing.</p>
  
  <p>I know this can be made with a cron job reading from a queue saved in MySQL or text file, but this way, even if there is no queue for a long period, the cron will always be running, looking for the queue...</p>
  
  <p>I've seen this funcionality in a script called Pommo (https://github.com/soonick/poMMo) but can't seem to understand how it's done.</p>
  
  <p>Does anyone have an idea for this?</p>