SMS & Messaging · Mobile
OneSignal is the world's most widely used customer engagement platform for push notifications, in-app messaging, SMS, and email. Founded in 2014 and headquartered in San Mateo, California, OneSignal powers push notifications for hundreds of thousands of applications worldwide with over 1 million developers on the platform.
OneSignal API is verified for developer integrations in Nigeria and across African markets, providing documented endpoints, sandbox testing, and developer support.
REST API Key
Free plan: 10,000 email subscribers free. Push notifications unlimited on free plan.
App and web developers needing a full-featured push notification and multi-channel messaging platform with a generous free tier and user segmentation for targeted campaigns.