title: Service for testing bounced email handling
body: <p>I'm sure this must exist, but I can't find anything anywhere that does this. What I want is some online service that provides an email address I can send an email to, and guarantee that it will always bounce.</p>
  
  <p>The reason I want this is to test the bounce-handling functionality of a piece of software. Obviously I can use some kind of valid address that I know doesn't exist, but that doesn't seem like good practice, even though this is only for a one-off test, not something that will be automated (at least not yet).</p>
  
  <p>Ideally, I'm looking for something like Mailinator, but where I can send messages, see them pending, and choose whether to bounce them, and what type of bounce.</p>
  
  <p>Google did turn up this address bounce-test@service.socketlabs.com, but as far as I can tell, it's no longer bouncing messages, because when I try it I'm not getting anything back.</p>
  
  <p>Any suggestions?</p>
  
  <p><strong>EDIT</strong>
  As per John's post below, the service seems to be working again - tested on 30th September 2016 from Gmail, and got a bounce response within 5 minutes.</p>