delete
https://sms.api.javna.com/SMS/v1.0/message/schedule
Cancel a scheduled message by only providing its messageId. Once canceled, the message will no longer be sent.
Note:
- The message's scheduled time must be in the future.
- To schedule a message, include the Unix timestamp (in seconds) in the
scheduledAtparameter when sending a message to only one recipient using the Send Text Message POST HTTP method.
