Does a feature like this exist? A question has been closed, because the user must write it in a better way.
I have already an answer for it, and it would be great to have an alert/notification when it will be open again.
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You can follow the question, but reopening isn't one of the 'Some post notifications' you'll get an update for (source: I just scienced this on Ask Different Meta). Only the author will get a notification for this. You will get notified when somebody else posts an answer, but that might be too late.