If you want to learn how to check the status of a fax transmission via the API here is the answer:
When you are sending a fax message through the FaxOut API, you can check the status of its transmission. Outgoing faxes pass through several workflow phases, so when you have just sent an API request message its status will be Queued (this status is returned in the FaxOut API response).
After some time (usually within couple of minutes) the status of the fax message will be changed to either Sent (which means that the fax was sent successfully) or to Sending Failed.
You can call the Get Message or the Get Message List API to check the status of a particular message.
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