Twilio check if phone number has been blacklisted
问题 I am currently integrating into the twilio rest api and need to perform a check on a users phone number to determine if that user has blacklisted themselves or not. I have little experience with this api and scouring through the documentation and google has turned up nothing. In our application we are going to have a notification center and if the user has blacklisted themselves I do not want to give them the ability to turn on their SMS notifications. Potentially a user could have SMS