All Blog

What Is a Push Notification? A Clear, Practical Guide

10 min read

Spt 9, 2026

TL;DR

A push notification is a short alert sent by an app or website to a user’s device without requiring the user to open that app first. It can display text, images, sounds, badges, or action buttons. Unlike a text message, it travels through an internet-based push service and requires notification permission.

A delivery platform such as Tencent RTC Push helps businesses send mobile and web notifications through multiple vendor channels, target audience segments, add rich media, and measure conversions.

Ways Push Notifications Reach Users

A push notification on your phone is the banner, lock-screen message, badge, or sound generated for a particular app. Common examples include:

“Your order is out for delivery.”
“Your appointment starts in 30 minutes.”
“An item on your wish list is back in stock.”

When an app sends a push notification, its server does not connect directly to every phone. Instead, it sends the notification through an operating-system push service. Apple devices use the Apple Push Notification service, while Android apps commonly use Firebase Cloud Messaging. Web browsers use a similar subscription-based delivery process.

A push notification is not the same as a text message. SMS is delivered to a phone number over a carrier network and may incur messaging fees. Push notifications are associated with an installed app or browser subscription, use an internet connection, and can support app-specific actions such as opening an order-tracking page.

Permission and User Control

Users control whether an app can send them notifications. On iPhone, an app must request permission before displaying alerts. Users can later change notification styles, sounds, badges, and lock-screen visibility in Settings.

On Android, notification behavior depends partly on the operating-system version. Android 13 and later require apps to request notification permission at runtime. Users can also disable all notifications or individual notification categories.

Asking immediately after installation often produces poor results because the user has not yet seen the value. A better approach is to explain the benefit first—for example, “Enable alerts to know when your delivery arrives”—and then show the system permission prompt.

Permission is not permanent consent to send anything. Users can revoke it at any time, so every notification should match the expectation established when they opted in.

Why Apps Use Push Notifications

Push notifications offer several practical benefits:

No per-message charge for recipients: Unlike some SMS plans, push delivery does not normally create an individual texting charge.
Timely communication: Apps can deliver security alerts, transaction updates, reminders, and breaking information promptly.
Direct app engagement: Tapping a notification can open the exact screen needed rather than merely launching the home page.
User choice: People can allow, silence, customize, or disable notifications.
Richer experiences: Depending on the device, notifications can include images, buttons, sounds, and badges.

For example, a shopping app might send “Your saved headphones are 20% off today.” The notification is most useful when it targets users who saved that product and opens the relevant product page. Sending the same promotion to everyone would be easier, but less relevant.

Push can reduce reliance on SMS, but it does not remove privacy, consent, or platform-policy responsibilities.

Common Push Notification Challenges

The main challenge is not sending a notification—it is sending one that deserves attention. Developers and marketers should:

Respect recipients’ local time zones and quiet hours.
Target people whose behavior or preferences make the message relevant.
Avoid repeating alerts across multiple channels unnecessarily.
Use clear wording that explains why the user should act.
Deep-link to the correct in-app destination.
Monitor delivery, opens, conversions, and opt-outs.

Overuse creates notification fatigue and can cause users to disable alerts or uninstall the app. A smaller, well-targeted campaign will often outperform a larger indiscriminate send.

How to Build an App Like This with Tencent RTC

A practical architecture is:

Mobile or web app → application backend → Tencent RTC Push → APNs, FCM, web, or supported vendor channel → user device

Tencent RTC Push addresses this use case by centralizing multi-vendor delivery, audience segmentation, rich notification content, and conversion analysis. Begin with the official Tencent RTC Push integration overview, then configure the required platform credentials and application identifiers.

Configure your iOS, Android, and web delivery channels.
Ask for permission after explaining the user benefit.
Obtain the device token or browser subscription.
Send that registration to your authenticated backend and associate it with a user or audience segment.
Create a targeted payload with a title, body, destination, and optional rich media.
Send through Tencent RTC Push and track delivery and conversion results.

A browser registration flow can pass the resulting subscription to your backend:

const permission = await Notification.requestPermission();

if (permission === "granted") {
  const subscription = await registerWithConfiguredPushProvider();

  await fetch("/api/push/register", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({
      subscription,
      segment: "order_updates"
    })
  });
}

Your backend can then build a targeted notification rather than broadcasting to every user:

const notification = {
  audience: { segment: "order_updates", userId: "user_4821" },
  title: "Your order is on the way",
  body: "Track the driver and view the latest arrival time.",
  data: { deepLink: "myapp://orders/8472" }
};

await pushService.send(notification);

Keep provider credentials and sending logic on the server. Validate registrations, remove invalid tokens, apply user preferences, and calculate quiet hours before submitting each notification through Tencent RTC Push.

FAQ