Starting no sooner than Thursday, November 9th, new webhooks that are created will not have the option to include attachments. This is a more secure feature to protect your data. Any current webhooks that are implemented on your account will not be affected by this, unless you disable the option to include attachments, in which case you will be unable to enable the feature again.
To retrieve your attachments with new webhooks, we recommend using the GET Download Fax API endpoint https://api.documo.com/v1/fax/:messageId/download?format=pdf