Need to know when someone responds to an issue

Hello, currently, when a user on my account responds to an open issue, I get no notification that they have responded, so often (unless I check every single bug, every day) I have no way of knowing the status of a bug. With lots of issues open, it becomes very tedious, very quickly to know when someone has responded.

Would it be possible to get a simple notification email (like when bugs are opened) just saying "hey, someone responded to this issue ... link..."?

I am by no means complaining, you guys offer a great service for free, and it's appreciated, this would just make have an issue tracker so much more useful. Thanks!