OneSignal

Overview

OneSignal provides a suite of APIs and SDKs designed to facilitate multi-channel communication with application users. The platform supports push notifications for web and mobile applications, in-app messaging, email, and SMS, allowing developers to implement various engagement strategies. Founded in 2014, OneSignal focuses on delivering messages across a broad spectrum of devices and platforms, including iOS, Android, web browsers, and game engines like Unity.

Developers use OneSignal to integrate communication functionalities into their applications, enabling features such as transactional alerts, promotional messages, and re-engagement campaigns. The platform includes tools for audience segmentation, allowing messages to be targeted to specific user groups based on behavior, location, or other custom data. This capability aims to enhance the relevance and effectiveness of communications, contributing to user retention and engagement.

The developer experience with OneSignal is structured around its comprehensive SDKs and API. SDKs are available for major mobile and web platforms, including native Swift and Java/Kotlin, as well as cross-platform frameworks like Flutter and React Native. Integration typically involves adding the relevant SDK to an application and configuring message sending and receiving logic. The OneSignal API reference provides detailed endpoints for programmatic interaction, enabling developers to manage users, send messages, and retrieve analytics data directly through HTTP requests. This programmatic access supports custom automation and integration with existing backend systems.

OneSignal is suitable for organizations seeking to manage user communication across multiple digital touchpoints from a unified platform. It is particularly used in scenarios requiring high-volume notification delivery and granular audience targeting. For example, mobile applications often use OneSignal for real-time alerts, while e-commerce websites might use it for abandoned cart reminders or promotional offers. The platform's compliance with regulations such as GDPR and CCPA, alongside SOC 2 Type II certification, addresses data privacy and security requirements for enterprise use cases.

Key features

• Push Notifications: Delivers pop-up messages to web browsers, iOS, and Android devices, even when the application is not actively in use.
• In-App Messaging: Displays messages directly within a mobile application while it is active, useful for onboarding, feature announcements, or contextual support.
• Email: Supports sending transactional and marketing emails, integrated with the same audience segmentation capabilities as other channels.
• SMS: Enables sending text messages for critical alerts, promotions, or verification codes.
• Audience Segmentation: Allows developers to define and target specific user groups based on various criteria, including user behavior, device type, and custom tags.
• A/B Testing: Provides tools to test different message variations to optimize engagement rates.
• Real-time Analytics: Offers dashboards to monitor message delivery rates, open rates, and user engagement metrics.
• SDKs for Multiple Platforms: Supports a wide range of environments including iOS, Android, Web/JS, Flutter, React Native, Unity, Cordova, Xamarin, MAUI, Swift, and React, simplifying integration across diverse tech stacks.
• API for Programmatic Control: A RESTful API allows for sending messages, managing users, and retrieving data programmatically, supporting custom workflows and integrations.

Pricing

OneSignal offers a multi-tiered pricing model, including a free tier for initial development and smaller-scale use. Paid plans are structured to accommodate increased subscriber limits, higher message volumes, and advanced features.

Detailed pricing information and feature breakdowns for each tier are available on the OneSignal pricing page.

Common integrations

OneSignal is designed to integrate with various development environments and backend systems. Its SDKs facilitate direct integration into client-side applications, while its API supports server-side interactions.

• Mobile Applications (iOS/Android): Direct SDK integration for native push notifications and in-app messages. Refer to the OneSignal iOS SDK setup guide and Android SDK setup guide.
• Web Applications: JavaScript SDK for web push notifications across major browsers. See the OneSignal web push quickstart.
• Cross-Platform Frameworks: Dedicated SDKs for Flutter, React Native, Unity, and Cordova. For example, consult the OneSignal Flutter SDK documentation.
• CRM and Marketing Automation: Integrations with platforms like Salesforce Marketing Cloud or HubSpot via webhooks or API to synchronize user data and trigger campaigns.
• Analytics Platforms: Connection to analytics tools to correlate notification performance with overall user behavior.

Alternatives

Organizations evaluating OneSignal may consider other platforms offering similar multi-channel communication or notification services:

• Firebase Cloud Messaging: A free, cross-platform messaging solution for reliable delivery of notifications. It is integrated with other Firebase services and Google Cloud products.
• Braze: A comprehensive customer engagement platform that provides push notifications, in-app messages, email, and SMS, alongside advanced segmentation and journey orchestration.
• Iterable: A growth marketing platform that offers a range of communication channels, including email, push, and in-app, with a focus on personalized user experiences and workflow automation.

Getting started

To begin using OneSignal for web push notifications, integrate the JavaScript SDK into your web application. The following example demonstrates basic initialization and prompt for notification permissions. This code should be placed within the <head> tag of your HTML.

<!DOCTYPE html>
<html>
<head>
    <title>OneSignal Web Push Example</title>
    <script src="https://cdn.onesignal.com/sdks/OneSignalSDK.js" async=""></script>
    <script>
        window.OneSignal = window.OneSignal || [];
        OneSignal.push(function() {
            OneSignal.init({
                appId: "YOUR_ONESIGNAL_APP_ID", // Replace with your actual App ID
                safari_web_id: "YOUR_SAFARI_WEB_ID", // Required for Safari push notifications
                notifyButton: {
                    enable: true, // Show the default OneSignal notification button
                },
                allowLocalhostAsSecureOrigin: true,
            });

            // Optional: Add an event listener for when the user subscribes
            OneSignal.on('subscriptionChange', function(isSubscribed) {
                console.log("The user's subscription state is:", isSubscribed);
                if (isSubscribed) {
                    OneSignal.getUserId().then(function(userId) {
                        console.log("User ID is", userId);
                    });
                }
            });
        });
    </script>
</head>
<body>
    <h1>Welcome to the OneSignal Web Push Demo!</h1>
    <p>Click the notification bell to subscribe.</p>
</body>
</html>

Replace "YOUR_ONESIGNAL_APP_ID" and "YOUR_SAFARI_WEB_ID" with the credentials obtained from your OneSignal dashboard. After integrating this code, a OneSignal notification bell will appear on your website, prompting users to subscribe to push notifications.