That's probably the one thing this site actually is flawed over, e-mail notification for comments. You might actually, but I'll have to do a bit of digging on it in the settings. If not, you could try asking "Moka" to see if it would be possible to add that feature in, cuz it would be very useful.
Though when you login, you should see a list of icons running across the top of the page, one looks like

When you have a new comment, it'll change to


vs
