UChicago is notorious for this, I feel. I think there was some discussion some time ago about EDU email addresses not receiving e-mails and updates. I just happened to log in and find an interview invite waiting for me.
I created a spreadsheet with all the websites, usernames, and passwords of the schools I applied to. For about 30 schools it takes me only a few minutes to check my statuses. (You probably spend more time reading SDN, which will direct you toward which statuses to check in the first place...)