I hate browser alerts usually. But think in this one case I'd be happy if I got an alert from my browser opening up the deploy page in a new tab.
Exactly. I end up pushing to master in git in various ways (command line, IDE, GitHub) and I always want the option to have the browser open up the deploy when I do.
I hate browser alerts too! But I hear you. To confirm, you mean getting notified when you're on a different site using something like this? https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API
@Anurag Goel: That's what I would want on this feature