- When someone Subscribes using the Platform, you can use the Subscription Added Callback.
- When someone updates their preferences and personal data outside of the Platform, you can use the Update a Person API.
Note: If there is custom data you want to store, you need to set up the custom fields ahead of time.
- When someone unsubscribes, you can use the Subscription Removed Callback.
Note: When a Person adds a mobile number to your preference center, and you want to sign them up, you should go through the Web-Based Subscriber Management process as described in the previous scenario.