CamScanner provides you the fax service, and you can fax your document to more than 20 countries and regions.

Please open the doc you want to fax in the app-->tap the "share" button on top right-->share PDF file-->"Share"-->"upload/fax"-->fax.

The fax service is provided by a 3rd party fax service provider, which enables faxing based on a charging system. The fax fee of CamScanner (either free or pro version) is based on your fax pages: $0.99 for 1 page fax.