Reliable service to handle in-app messages

I'm currently on the lookout for a reliable service to handle in-app messages, and I could really use your expertise. Can anyone recommend a service they've had success with for in-app message delivery? I'm looking for something user-friendly with solid customization options. Your suggestions will be much appreciated as I navigate through the available options. Thanks in advance!

Just wanted to share my experience with https://www.pushwoosh.com/products/android-in-app-messaging/ – what a fantastic service for sending in-app messages! The platform is incredibly user-friendly, and I've found it to be super effective in engaging my app users.
The customization options are top-notch, allowing for personalized and targeted messages that really make an impact. The analytics feature provides valuable insights, helping me fine-tune my messaging strategy.
If you're looking for a reliable and powerful tool for in-app communication, I highly recommend checking out Pushwoosh. It's been a game-changer for me!

I've had great experiences with Firebase Cloud Messaging (FCM) for in-app message delivery. It's user-friendly, reliable, and offers solid customization options. Check it out, and I hope it fits your needs! By the way, here's a helpful link on the messenger app development process: https://www.cleveroad.com/blog/how-to-make-a-messenger-app-development-process-insights/. Good luck!