Old Goat,
Have you checked your Spam folder in Outlook Express or the Spam filter setting in your Internet Security software? I don't understand some of the posters saying you have to "do something" to get emails about threads you are active in. All I've ever done is just "post to a thread" and it "automatically" gets added to "My Subscriptions" if I right click on the Notifications at the top right corner and select my Inbox. And I get emails for everyone's post to that thread from there on out(again, without any action in my part). I think it's something on your PC(you DO know that Outlook Express is a Microsoft product.......only company I've ever seen that can "sell" expensive software that "doesn't work":0)
BTW, I use Outlook(Microsoft Office Suite) and paid several hundred dollars for that software(includes Word, Excel, Powerpoint, etc.) Like I said....NOT worth what I paid for it(and no "free" upgrades from Microsoft)!!! I bought an iPad and the iTunes apps that cost $.99 to $2.99 is better than ANY Windows-based software I've ever seen.