Push Notification – Definition, Use Cases and Best Practices at a Glance
Short messages sent from an app or website directly to the user’s device, even when the app is not open.
What are Push Notifications? Technology, Best Practices & Tips
Push notifications are one of the most effective channels to re-engage users and inform them in real time. Whether order status, breaking news or personalised offers: used well, they significantly increase engagement and retention. Used poorly, they lead to immediate uninstalls. The art is relevance, timing and frequency.
This glossary entry for Push Notification gives you a clear Definition, practical Use Cases and Best Practices at a glance – with examples, pros and cons, and FAQs.
What is Push Notification?
- Push Notification – Short messages sent from an app or website directly to the user’s device, even when the app is not open.
Push notifications are messages sent actively from a server to a user’s device without the user having to open the app. Types include mobile push (iOS/Android), web push (browser notifications via service workers) and in-app messages. On iOS, delivery is via Apple Push Notification Service (APNs); on Android via Firebase Cloud Messaging (FCM). Web push uses the Push API with service workers.
Users must explicitly allow push (opt-in), which improves audience quality.
How does Push Notification work?
The app registers with the OS push service (APNs for iOS, FCM for Android) and receives a device token. The app sends this token to your backend. When a notification should be sent, the backend sends the message with the token to the push service, which delivers it to the device. Rich push can include images, buttons and interactive elements.
Segmentation and personalisation greatly increase relevance.
Practical Examples
E-commerce app: Customer gets a push when their package is shipped, with tracking link and estimated delivery.
Banking app: Instant notification for every account movement as a security feature against fraud.
News app: Personalised breaking-news alerts based on the user’s interests.
Fitness app: Daily reminders at workout time with motivating text and current streak.
SaaS platform: Web push when a colleague comments or assigns a task.
Typical Use Cases
Transaction notifications: Order confirmations, shipping status and payment received in real time
Re-engagement: Bringing inactive users back with personalised offers or reminders
Real-time updates: Breaking news, live scores or price changes
Security: Immediate alerts for suspicious account activity
Marketing: Personalised offers, sale announcements and product recommendations
Advantages and Disadvantages
Advantages
- High visibility: Push appears on the lock screen and is hard to miss
- Real-time delivery: Messages reach users within seconds
- Engagement: Well-personalised push can achieve 20–40% open rates
- Retention: Regular, relevant notifications keep users active
- No delivery cost: Unlike SMS or calls, push does not incur per-message cost
Disadvantages
- Opt-in hurdle: Users must allow push; on iOS only about 50% do
- Annoyance risk: Too many or irrelevant notifications lead to uninstalls
- Platform differences: Different APIs and limits on iOS and Android need separate implementation
- No guarantee: Push can be suppressed by power saving, Do Not Disturb or OS settings
Frequently Asked Questions about Push Notification
How often should you send push notifications?
It depends on the use case. Transactional (orders, security) as often as needed. Marketing push at most 2–5 per week. Relevance matters more than volume: fewer, highly relevant messages beat many generic ones. A/B testing helps find the right frequency.
What is the difference between push and in-app messages?
Push reaches users outside the app on the lock screen or notification centre. In-app messages are shown inside the app when it is open. Both complement each other: push brings users back, in-app informs during use.
Do push notifications work on the web?
Yes. Web push uses the Push API and service workers in modern browsers (Chrome, Firefox, Edge). Safari has supported web push since 16. Users must consent in the browser. Web push is especially useful for SaaS and news sites without a native app.
Direct next steps
If you want to apply or evaluate Push Notification in a real project, start with these transactional pages:
Push Notification in the Context of Modern IT Projects
This page provides a concise definition of Push Notification, practical use cases and best practices at a glance — everything you need to evaluate the technology for your next project. Push Notification falls within the domain of Development and plays a significant role across a wide range of IT projects. When evaluating whether Push Notification is the right fit, organizations should look beyond the technical merits and consider factors such as existing team expertise, current infrastructure, long-term maintainability, and total cost of ownership.
Drawing on our experience from over 250 software projects, we have found that correctly positioning a technology or methodology within the broader project context often matters more than its isolated strengths.
At Groenewold IT Solutions, we have worked with Push Notification across multiple client engagements and understand both its advantages and the typical challenges that arise during adoption. If you are unsure whether Push Notification suits your particular requirements, we are happy to provide an honest, no-obligation assessment. We analyze your specific situation and recommend the approach that delivers the most value — even if that means suggesting an alternative solution.
For more terms in the area of Development and related topics, see our IT Glossary. For concrete applications, costs, and processes we recommend our service pages and topic pages — there you will find many of the concepts explained here put into practice.
Related Terms
Want to use Push Notification in your project?
We are happy to advise you on Push Notification and find the optimal solution for your requirements. Benefit from our experience across over 200 projects.