Push Notification

A push notification is a short message that an app or website sends straight to a user's device or browser, appearing on the lock screen, notification tray, or a corner of the screen even when the person is not using the app. The word push is the point. The server initiates the message and pushes it out, rather than waiting for the user to open the app and pull content in. Every push channel runs through an intermediary — Apple's push service for iPhones, Firebase Cloud Messaging for Android, the browser push standard for the web — so the message reaches the device through the operating system, not the app directly. A push almost always requires explicit opt-in. The user grants permission first, and can revoke it at any time from settings.

The reason marketers care about push is reach and timing. A notification lands on a device the person already carries, at a moment the sender chooses, with no email client or open browser tab in between. Used well, it brings a lapsed user back, flags an abandoned cart, confirms a shipment, or surfaces a time-sensitive offer. Used badly, it becomes noise the user swats away — and because permission is revocable, a stream of irrelevant pushes trains people to switch the channel off entirely. That fragility is what separates push from channels the user cannot easily mute. The value of a push notification is not that you can send it, but that the user agreed to receive it, which makes relevance and restraint the whole game.

The closest cousin to a push notification is the in-app message, and the difference is where and when each reaches the user. A push notification is delivered outside the app, to the device or browser, whether or not the app is open — its job is to pull an absent user back. An in-app message appears inside the app while the person is already using it, as a banner, modal, or tooltip triggered by what they are doing right then. Push reaches the disengaged; in-app messages reach the engaged. Push needs opt-in permission and travels through the operating system's push service, while an in-app message needs no permission because the user is already present, and it is rendered by the app itself. The two are complements, not substitutes.

Getting the split right changes results. Because a push notification interrupts someone who is not in the app, it should be reserved for messages worth the interruption — a shipment update, a genuinely relevant offer, a reason to return. Because an in-app message reaches someone already paying attention, it suits onboarding tips, feature announcements, and upsells that would feel intrusive as a push. Sending everything by push burns the opt-in and drives uninstalls; sending everything in-app misses the disengaged users who never open the app. The mature approach treats push as the channel for absence and in-app as the channel for presence, and judges each on whether it moved the behavior it was meant to move rather than on raw send volume.

Using push notifications well starts with respecting the opt-in. Ask for permission at a moment when the value is obvious, not on first launch before the user knows what the app does. Then segment and personalize so the message matches the person. Behavior-triggered pushes — an abandoned cart, a price drop on a watched item, a re-engagement nudge after inactivity — consistently outperform broadcast blasts. Mind timing and frequency, respecting time zones and quiet hours, and cap how often any one user is pushed, because a single well-timed push beats a barrage of poorly timed ones every time. Write for the glance, because a push is read in a second on a lock screen, so the first few words carry the message. A deep link should drop the user exactly where the notification promised, not on a generic home screen.

The failures are predictable. Over-sending trains users to mute or uninstall; generic broadcasts feel like spam because they ignore what the person actually does; requesting permission too early gets it denied before any value is shown; and a push that opens the app to the wrong place breaks the promise it made. Treating opt-in rate, delivery, open, and downstream conversion as one funnel — rather than celebrating sends — keeps the channel honest. It also means watching the opt-out rate as closely as the open rate, since a rising unsubscribe trend is the early warning that the channel is being overworked. The discipline is simple to state and hard to hold. Send fewer, more relevant, better-timed notifications, each earning its interruption, because every irrelevant push spends permission you cannot easily get back.

Push notification — from the client-server push model, where the server initiates delivery to the device — names the opt-in messages an app or site sends to drive engagement.

Etymology: source.

Search interest for this term over the last five years:

View interest-over-time on Google Trends →

Areas of marketing where push notification is a core concern: