OneSignal
OneSignal is the easiest and most popular way to send push notifications, in-app messages/pop-ups, emails, and SMS messages to your players.
With no limit on the number of subscribers or messages sent, OneSignal offers a completely free plan for indie developers, while also providing powerful paid features for growing game studios.
Message Personalization & Segmentation
Design customer user journeys by leveraging Data Tags like upcoming level or lesson names and points earned or words learned. Send push notifications for in-game events, emails when friends send virtual gifts, or promote related content with an in-app message.
Best-in-Class Scale, Speed & Reliability
Messages never get stuck in a queue or send slowly. OneSignal has the highest messaging throughput in the industry and can support customers as large as 100M MAUs. It provides first-class support for all popular messaging channels and devices including iOS and Android as well as SMS with MMS support, and rich email delivery.
Trusted by Developers Globally
OneSignal is the most trusted messaging product in the industry, leveraged by 1.2 million users to send over 8 billion messages/day.