Delete received faxes with the Dropbox Fax API

This functionality is not available through the API. To delete a fax, one must log in to HelloFax.com to delete received faxes. However, sent faxes are not saved and don't need to be deleted. 

Faxes that are outbound from your FAX API account (sent from your FAX API Account) are deleted after they are completed. 

Checking the status of a fax using c-url:

can only be done after the fax is sent, but before it is complete. After the fax API outbound is completed and the callback has been sent, the fax is deleted and from then on asking for a status will result in a 404 message:

{"status_code":404,"message":"Transmission not found or not accessible."}

For this reason, in order to get a status on your outbound fax, you must set up the callbacks and watch for the status message in the callbacks. 

An example of a callback message can be found here.

The possible status codes are documented below and on the walkthrough.

Possible status code values:

T= Transmitting/sending

P= Pending/converting

S= Successfully sent

E= Error. Failed to convert or send fully

H= On hold. A type of error caused by having an unconfirmed account or by being out of fax pages and not having a monthly subscription

Possible error code values (reference only when Status Code is set to E):

B= Received a busy signal

N= No Answer

A= Unallocated number (usually means it's been disconnected)

D= The line is disconnected or unreachable

L= This number has been blacklisted (shouldn't happen for any US number)

U= Unknown error. This usually occurs when a human answers the line or an error occurred during the fax transmission