I have "favorite tags". I have "filters" that reference those tags. I have "subscriptions" that reference filters.
What's strange is that one of the subscriptions I set up references a filter that isn't in my list of filters.
I then clicked "Manage" on that subscription, and it sort of gave me an explanation of why this filter isn't in my list of filters. It said "You are viewing a filter that was created automatically upon email subscription", followed by a "Save to my filters" button.
Huh? I know I set up this subscription, but I find the whole filter and subscription system pretty obtuse (I even find it difficult to find the page to edit them). What exactly did I do to set up this subscription that is different from other subscriptions?