OneSignal Push Notifications

Push Notifications Delivered

OneSignal is the market leader in customer engagement, powering mobile push, web push, email, and in-app messages.

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Trusted by 922,162 developers

  • LendingTree
  • Volkswagen
  • Verizon
  • Zynga
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  • EatStreet
Case Studies
Mike Rome
One of the greatest things about OneSignal is that minimal engineering is required to execute tactics - from personalization and segmenting, to A/B testing, and beyond.

Everything You’re Looking For

It’s never been easier to connect with customers.

15 Minute Setup

Our users are always shocked at how easy it is to get started.

Real-Time Reporting

View delivery and conversion performance for every message.

Incredible Scalability

Millions of users? No problem. We send out billions of notifications daily.

A/B Testing

Compare message performance and automatically send the best.

Superior Segmentation

Create personalized messages and send them to the right audiences.

Automated Messaging

Set it and forget it. You can trigger notifications based on user behavior.

Intelligent Delivery

Leverage machine learning to send your messages at the optimal time.

Analyze Results Anywhere

Our SDKs are open source and every component is accessible via API.

Limitless Integrations

OneSignal integrates with 1,400+ services.

Built for Developers

Our founders were app developers first. We couldn’t find any great push notification tools so we built OneSignal.
Code in the language you know with any development environment.

All in less than 10 lines of code.

Apple iOS
import OneSignal

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

  OneSignal.initWithLaunchOptions(launchOptions,
    appId: "YOUR_APP_ID",
    handleNotificationAction: nil,
    settings: [kOSSettingsKeyAutoPrompt: false])

  OneSignal.inFocusDisplayType = OSNotificationDisplayType.notification;

  OneSignal.promptForPushNotifications(userResponse: { accepted in
    print("User accepted notifications: \(accepted)")
  })

  return true
}
Android
import com.onesignal.OneSignal;

public class YourAppClass extends Application {
   @Override
   public void onCreate() {
      super.onCreate();

      OneSignal.startInit(this)
        .inFocusDisplaying(OneSignal.OSInFocusDisplayOption.Notification)
        .unsubscribeWhenNotificationsAreDisabled(true)
        .init();
   }
}
Web Push
<head>
  <link rel="manifest" href="/manifest.json">
  <script src="https://cdn.onesignal.com/sdks/OneSignalSDK.js" async></script>
  <script>
    var OneSignal = window.OneSignal || [];
    OneSignal.push(["init", {
      appId: "YOUR_APP_ID"
    }]);
  </script>
</head>
React Native
import OneSignal from 'react-native-onesignal';

export default class App extends Component {
  constructor(properties) {
    super(properties);
    OneSignal.init("YOUR_APP_ID");

    OneSignal.addEventListener('opened', this.onOpened);
  }

  componentWillUnmount() {
    OneSignal.removeEventListener('opened', this.onOpened);
  }

  onOpened(openResult) {
    console.log('Message: ', openResult.notification.payload.body);
    console.log('openResult: ', openResult);
  }
}
Unity
using System.Collections.Generic;

void Start() {
  OneSignal.StartInit("YOUR_APP_ID")
    .HandleNotificationOpened(HandleNotificationOpened)
    .EndInit();

  OneSignal.inFocusDisplayType = OneSignal.OSInFocusDisplayOption.Notification;
}

private static void HandleNotificationOpened(OSNotificationOpenedResult result) {
  // use notification opened result here
}
Flutter
void main() {
    OneSignal.shared.init("YOUR_APP_ID", {
        OSiOSSettings.autoPrompt: false
    });
    OneSignal.shared.setInFocusDisplayType(OSNotificationDisplayType.notification);

    OneSignal.shared.promptUserForPushNotificationPermission();
}

Code in any language. We provide native support for every development environment.

30+ Platform Integrations