I'm building an app using Firebase Notifications where a user can enter their zip code and then receive notifications for specific events happening in their locality.
How do I only send notifications to a specific user? I've tried including Zip Code in the Advanced Options sections of Firebase Notifications, but it still sends the notification to all users.
Seems like Topics is what you are looking for. When the user enters their zipcode you can subscribe them to a topic eg: /topics/zip then you can send to the appropriate zipcode from the console. Subscribing will create the topic if it does not already exist.
Note: Topics can take up to 24 hours to show up in the console after they are created.