Hey @TeamYouTube The notification inbox keeps notifying me of when a video gets uploaded a long time after it was actually uploaded. I've been notified of videos that came out yesterday
A channel is scanned by the system to check each subscriber's notification settings – this is a possible cause of the delay. If you're referring to the notifications being sent in one go a day after the vids were added, you can check here on what to do: https://yt.be/help/ZvZu