Send fax callback
When Phaxio is done processing your fax, it will post the job’s status to your send fax callback URL, if one is available. You can set up a send callback URL on the callbacks page in the web console, or specify one directly in your send API call.
If you’ve specified a global callback URL on the callbacks page and also make a send API call with a callback url specified, the API call’s URL will override the global one.
The callback HTTP request is a multipart POST and should be processed like a form submission.
If a callback fails, we will automatically retry the callback up to 16 times. There will be a backoff before each retry, which increases as follows:
|success||boolean||Was the fax sent successfully?|
|is_test||boolean||Is this callback as a result of a test call?|
|direction||string||The direction of the fax (in this case, 'sent'). Useful if you use the same callback URL for both sent and receive confirmations.|
|fax||Fax Object||The job's fax object.|
|message||string||The error message if the fax was unsuccessful.|