Heads up, Creators: On Dec 13-14 you may see a noticeable decrease in your sub count as we remove spam subscriptions. If spam is removed, you'll see a YouTube Studio alert: https://goo.gl/qGDBvX This should help give you confidence that the subs you do have are real fans!
Hey YouTube since this change I'm not a spam account but I have either been unsubbed from YouTubers I've followed for years or it changed all my notification settings to no notifications. Which also noted affects my sub box