How can i send message to a list of numbers the list is of 50 numbers (receivers).
In one API call according to Ring-Central document.
but whenever i try to send i get error.
Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.
Download RingCentral Phone for Desktop:
Tip: switch to the "sandbox mode" before logging in the app:
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