You can query for a subscriber using either their id, email, or phone number. One of the query params is required in order to lookup the subscriber.
is_pending field in the response tells you if the subscriber has confirmed their phone number or not. Whenever a new subscriber is added, they are required to confirm their phone number in order to receive messages. See Create Subscriber with Keyword for more information on compliance.
At least one query parameter is required
One of the following params are required in the request: