Why a bloated subscription list hurts your feed
The more inactive or forgotten channels you're subscribed to, the more your subscription feed and homepage recommendations get diluted with content you no longer care about. A periodic cleanup keeps your feed focused on channels you actually want to see.
Notifications vs. the feed itself
Unsubscribing removes a channel from your feed entirely, while adjusting the notification bell to "None" keeps the channel in your subscriptions without pinging you every time it posts -- useful for channels you still enjoy but don't need to be alerted about immediately.
Frequently Asked Questions
If I unsubscribe from a channel, will it lose track of my watch history on that channel?
No -- unsubscribing only removes the channel from your subscription feed. Your watch history and any comments you've left stay exactly as they were.
Is there a faster way to unsubscribe from many inactive channels at once?
Sorting the subscription management page by "least recently watched" groups your most inactive channels together, making it much faster to work through and unsubscribe from several at a time.