Is there any limitation on how many fax can be send in a day using Api?
"The throttling rates per API are determined by your RingCentral API Usage Plan and the API group for the API in question. The fax API is classified as a Heavy API which is set to 10 requests / minute by default so the fax rate is 10 per minute or 600 per hour. "
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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