Accepts a phone number and indicates whether the phone holder has opted out of receiving SMS messages from your account. You cannot send SMS messages to a number that is opted out.
To resume sending messages, you can opt in the number by using the
opt_in_phone_number
action.
sns_check_if_phone_number_is_opted_out(phoneNumber)
[required] The phone number for which you want to check the opt out status.
A list with the following syntax:
list( isOptedOut = TRUE|FALSE )
svc$check_if_phone_number_is_opted_out( phoneNumber = "string" )