Stop a scheduled or currently outgoing message.
Overview
The Cancel message API can be used to stop scheduled messages from being sent. It does not delete or remove the message from the app. If a message is in the process of sending, then canceling it may not fully prevent all targeted users from receiving it.
How to use this API
This API is most commonly used when sending Transactional messages to individual users, scheduling the message in the future with send_after. The response of our Create message API has an id which corresponds to the message_id used in this request. You can store this message_id on your server and use this API to cancel sending the message to the user if not needed anymore.
If you need a way to remove a notification already sent to a user, see Remove notifications & TTL.