It's just that you aren't paying attention. When I arrive at IHub in the morning--or more likely, the afternoon--I have two windows open just for IHub. Another for mail, and maybe another for searches or social media or other stuff. I have one of my IHub windows open to my mailbox. Starting with the earliest mail, I read one thread at a time, usually.
It's simple, as long as you understand how IHub works. And I think by now you do. You can always find any post you've lost track of in your profile.