Key Takeaways
- Push notifications deliver 7-10x higher engagement than email newsletters.
- Apps that send push notifications see 2-3x higher retention rates than those that do not.
- Start with 2-3 notifications per week and adjust based on engagement data.
- GDPR requires explicit consent and an easy opt-out mechanism for EU users.
What Are Push Notifications?
Push notifications are short messages that appear on a user's mobile device even when the app is not open. They pop up on the lock screen, appear in the notification shade, and can include text, images, action buttons, and deep links to specific content inside your app.
Unlike email, which requires the user to open their inbox, or SMS, which costs money per message, push notifications are free to send and arrive instantly. They are the most direct way to reach your app users without any intermediate steps.
For apps built from websites, push notifications bridge the gap between a passive bookmark and an active engagement channel. Without them, your app is just a shortcut to your website. With them, you can bring users back every time you publish new content or have something important to share.
Why Push Notifications Matter
The numbers tell the story. Push notifications consistently outperform every other communication channel on mobile:
For website-based apps, push notifications are especially important because they give users a reason to keep the app installed. An app that never sends notifications is an app that gets deleted to free up storage.
How Push Notifications Work in Converted Apps
When you convert a website to an app using a service like WebToAppify, the push notification system works like this:
Token Registration
When a user opens the app, it registers for push notifications with the platform. Apple Push Notification Service handles iOS, Firebase Cloud Messaging handles Android. The platform returns a unique device token.
Permission Prompt
The app asks the user for permission to send notifications. This is a one-time prompt. The user can allow or deny it. Always explain the value before requesting permission.
Token Storage
The device token is stored by the conversion service, linked to that specific user's device. This token is used to target notifications to individual devices.
Sending and Delivery
Compose a notification through the dashboard, select your audience, and send. The service delivers it through the platform's push service to the user's device, even when the app is closed.
Tools and Services for Push Notifications
Firebase Cloud Messaging
Google's free push notification service for Android. Handles unlimited messages at no cost. FCM is the backbone of Android push notifications and works for iOS through APNs integration.
OneSignal
Popular platform supporting Android, iOS, and web push. Free tier includes up to 10,000 subscribers, unlimited notifications, and basic segmentation. Paid plans add A/B testing and automation.
Conversion Service Dashboards
Most conversion services include built-in push notification dashboards. WebToAppify Pro includes push support with a simple interface for composing and sending notifications.
Firebase In-App Messaging
While not push notifications exactly, In-App Messages display when the user has the app open. Useful for onboarding, promotions, and announcements that need visual impact.
Best Practices for Push Notifications
Timing Matters
Send when your audience is most active: mornings (7-9 AM), lunch breaks (12-1 PM), and evenings (6-8 PM). Avoid late night or very early morning unless your content is time-sensitive like breaking news.
Keep It Short
Android shows about 65 characters before truncating. iOS shows about 40 on the lock screen. Your message should be clear and compelling in one line.
Personalize When Possible
Generic notifications get ignored. Personalized notifications based on user behavior, preferences, or location perform significantly better. For e-commerce, notify about items in their cart.
Use Action Buttons
Push notifications can include action buttons that let users respond without opening the app. Action buttons increase engagement by 30-50% compared to basic notifications.
Segment Your Audience
Not every notification is relevant to every user. Segment by interests, behavior, location, or engagement level. This reduces opt-outs and increases engagement rates.
Frequency Control
Start with 2-3 per week and adjust based on engagement data. If your opt-out rate exceeds 1% per notification, you are sending too many or too few.
GDPR, Permissions, and Compliance
GDPR Compliance for Push Notifications
If your app serves users in the European Union, push notifications fall under GDPR. You need to clearly explain what notifications you will send and why before asking for permission, allow users to opt out at any time, not condition app access on notification permission, store notification preferences securely, and provide a way for users to request deletion of their notification data.
Both iOS and Android require explicit user permission before sending push notifications. You cannot send notifications to a user who has not granted permission. The permission prompt appears when the user first opens the app or when you explicitly request it.
- Apple Guidelines - Apple is strict about push notification usage. You cannot use push notifications for marketing purposes without explicit user consent. Notifications must be relevant to the app's core functionality. Spammy or irrelevant notifications can get your app removed from the App Store.
- Google Play Policies - Google requires that push notifications be relevant to the app's content and not used primarily for advertising. You must provide an in-app notification settings screen where users can disable specific notification types.
Push Notification Strategy by App Type
Blog and News Apps
Send notifications for new articles, breaking news, or trending content. Segment by topic interest. Keep notifications factual and informative rather than promotional.
E-commerce Apps
Use notifications for cart abandonment recovery, price drops, back-in-stock alerts, flash sales, and order status updates. These are high-value notifications that users actually want to receive.
Service and SaaS Apps
Send notifications for account activity, billing reminders, feature updates, and usage milestones. Keep them informational rather than promotional. Users appreciate knowing about their account status.
Measuring Push Notification Success
Track these metrics to understand how your push notifications are performing:
- Delivery rate: Percentage of notifications that reach the device (target: above 95%)
- Open rate: Percentage of delivered notifications that users tap (varies by industry, 3-8% is typical)
- Opt-out rate: Percentage of users who disable notifications after receiving one (target: below 1% per campaign)
- Conversion rate: Percentage of notification opens that lead to a desired action like purchase, signup, or reading an article
- Revenue per notification: For e-commerce, track how much revenue each notification generates
Add Push Notifications to Your Website App
WebToAppify Pro includes push notifications for Android and iOS. Convert your website and start sending notifications today.
Convert FreeFrequently Asked Questions
Can I send push notifications without user permission?
No. Both iOS and Android require explicit user permission before sending push notifications. You must prompt the user and they must grant permission. Sending notifications without permission violates platform guidelines and can get your app removed from the stores.
How many push notifications should I send per week?
Start with 2-3 per week and adjust based on engagement data. Monitor your opt-out rate closely. If it exceeds 1% per notification, you are sending too many. If engagement is high and opt-outs are low, you can gradually increase frequency.
Do push notifications work on iOS?
Yes, fully. iOS has supported push notifications since iOS 3.0. Modern iOS versions support rich notifications with images, action buttons, and custom sounds. The key difference is that iOS is stricter about notification quality and relevance.
Are push notifications free to send?
Firebase Cloud Messaging is completely free for unlimited messages. OneSignal offers a free tier for up to 10,000 subscribers. Most conversion services include push notifications in their paid plans. The only cost is the effort to create compelling content.