What is a push notification?
A push notification is a message that can appear on a device as an alert from an app or website. Unlike content visible only while a page is open, an alert may appear outside the main interface when the relevant permissions and system conditions are met. It can include a title, short text and, depending on the platform, an image or a link to a specific action.
How does delivery work?
A basic workflow has four parts: a website or app identifies an authorized subscription or device; a server prepares the message and chooses recipients; the browser or operating system notification provider accepts the delivery request; and the device decides when and whether to display it. The final step depends on connectivity, user settings and platform rules. Provider acceptance alone does not confirm that a person received or read the notification.
Web push versus mobile push
Web push typically requires the visitor to grant notification permission to a site. Compatible browsers use technologies such as service workers and push services. Permission, delivery and presentation rules vary by browser and operating system. Native mobile apps integrate with Android or iOS notification capabilities and their respective identifiers and services. The experience and reach should never be assumed to be identical across devices.
Common use cases
Push messages can communicate updates about a booking, notify a user about account activity, remind someone of an action they requested or flag a service change. They are also used in promotional campaigns when there is an appropriate subscriber base and permission. Transactional notices tied to an operation should be distinguished from marketing messages: recipients may have different expectations, and different rules can apply.
Permission, privacy and frequency
Notifications are more useful when people understand what they will receive and can change their preferences. Explain the benefit before requesting permission, provide category settings when possible, avoid disruptive delivery hours, and keep sensitive information out of previews that may be visible on a locked screen. Message frequency matters: too many alerts can lead to muted notifications or app removal. Revoking consent should be clear and respected.
Scheduling and delivery statuses
Scheduling defines a target time; it does not guarantee exact arrival. Queues, limits, connectivity and device restrictions may intervene. Notification systems often track preparation, queueing, processing and provider response separately. A successful provider response does not by itself prove that an alert was displayed on a device. Distinguishing those stages helps teams avoid reporting accepted messages as confirmed deliveries.
Designing a helpful notification
Use a descriptive title, concise text and an action related to the reason for the alert. The message should make sense without requiring the reader to recall a previous campaign. For important notices, include enough context to decide whether to open the app. A preview can help with length, hierarchy and readability, but it does not replace testing on supported real devices.
Create clearer messages with the free PUXIO preview tool: see the layout without signing up or sending real notifications.