I'm not getting them, despite ticking the 'Auto follow topics I reply to.' and setting Notification frequency to 'immediate'

Steve, In the top right corner of the window, click your username, My Settings, the Notofication Settings in the left column. Here's a pic of all the settings you should have:

Thanks,I hadn't checked those other boxes

ALL my email checkboxes are selected, notification is set to immediate, but I still don't receive any notifications.I checked my spam folder, and nothing in there, either.(My email is at GMail, so it should be pretty reliable.)