If you have ever opened an app's notification settings and seen a long list of categories — "General", "Promotions", "Mentions", "Silent" — those are notification channels. Introduced in Android 8 (Oreo), channels are the reason you can fine-tune alerts instead of muting an app entirely.
What a notification channel is
A channel is a categorized stream of notifications from a single app. Each channel has its own behavior: sound, vibration, importance, and whether it shows on the lock screen. When an app posts a notification, it must attach it to a channel. You, the user, control the channel — the app cannot override your choice.
Why one app has many channels
Well-built apps split their alerts so you stay in control. A banking app might use one channel for "Security alerts" (high importance, always audible) and another for "Product news" (silent). A chat app separates "Direct messages" from "Group mentions" and "Recommended communities". This design lets you keep critical alerts loud while sending marketing noise straight to a silent channel.
How to customize a channel
- Go to Settings → Notifications → App notifications and tap the app.
- You will see the list of channels. Tap one.
- Adjust Importance (from "Urgent" down to "Silent"), sound, vibration, and lock-screen visibility.
- Set a noisy channel to Silent to keep the content in your shade without any ping.
Tip: if you cannot find a channel, long-press any notification from that app, tap the gear icon, and you jump straight to the right channel.
Pinning beyond channels
Channels control how an alert behaves; they do not stop important notifications from scrolling away under a pile of new ones. For that, use Dingpin: pin a specific notification and it stays at the top regardless of channels, volume, or incoming volume. It is the perfect companion to a well-tuned channel setup.
What channels are
A notification channel is a category within an app. Each app can define multiple channels, one for each type of alert it sends. A messaging app might have separate channels for direct messages, group messages, and promotional notifications. A news app might have channels per topic. Channels give you fine control over sounds, importance, and DND exemptions.
Why Google introduced them
Before channels (pre-Android 8), you could only control notifications at the app level — turn all of an app's notifications on or off. That was too coarse: a chat app's important direct messages should not be silenced just because the app also sent promotional pings. Channels let apps categorize their own notifications and let you tune each category.
How to see an app's channels
- Settings → Notifications → App notifications → [app].
- Each channel is listed separately with its own importance, sound, and DND exemption.
- Tap a channel to adjust its behavior independently.
What you can control per channel
For each channel, you can independently set:
- Importance. Urgent / High / Medium / Low / Silent.
- Sound. Pick any audio file as the alert sound.
- Vibration pattern. Custom vibration intensity.
- Pop on screen. Whether heads-up banners appear.
- Lock screen visibility. Show all / hide content / hide entirely.
- Bypass DND. Whether this channel can alert even during Do Not Disturb.
When channels are poorly designed
Some apps put everything in one channel, which removes the benefit of fine control. If you cannot customize an app's alerts the way you want, check the channels — the app may simply have not implemented them well. In that case, the global app-level notification toggle is your only knob.
Why channels cannot be deleted
Once an app creates a channel, you cannot delete it from your settings — only mute or modify it. Apps occasionally create channels you do not need; the workaround is to set those channels to silent.
For the broader story, see notification importance, muting notifications for specific apps, and customizing notifications on Pixel.