How to ANONYMOUSLY send faxes through the internet:
1. Use the tor browser! If you don’t have tor installed, go to www.torproject.org and download the browser bundle.
2. Go to www.sendfaxinternet.com. Enter 360-740-3533 for the fax number, whatever message you want, and attach your file to transmit.
3. Send as many faxes as you want. It’s free!