Question: Is there a platform that supports various notification formats, such as in-app banners, web stories, and SMS, to reach users across different channels?

If you're looking for a service that accommodates different notification formats to reach users on different platforms, Courier could be a good option. It lets developers send notifications through many channels, including email, SMS, push notifications and others, with a single API. With support for more than 50 providers and detailed SDKs, Courier makes it simple to add omnichannel templates, centralized analytics and customizable UI elements to your app.

Another good option is Reteno, a user retention service that offers personalized, omnichannel communications across eight notification channels. That includes mobile push, in-app push, email, SMS, web push, messengers and app inbox notifications. Reteno is designed for easy integration and automation, with features like event-driven campaigns and segmentation that can help you get more out of your communications.

For a more mature service, check out CleverPush. This cross-platform push notification service also handles web push, app push, email, chat, Nyws, Web Stories, SMS and wallet push. It has features like follow-up campaigns, machine learning-based user segmentation and split testing to help you target people properly on multiple platforms, which is why it's popular in the publishing and e-commerce industries.

Last, Gamooga is an AI-powered omni-channel marketing service that can offer personalized interactions across multiple touchpoints. It supports Push Notifications, In-app Messaging, Email, SMS and Web Push Notifications. With features like dynamic segmentation, marketing automation and real-time user analytics, Gamooga lets you target people with campaigns and manage their lifecycles, which can help you keep people engaged and retain them across many industries.