Don't toss that machine......It's more useful than you may think.
We still keep our all-in-one scanner / copier / fax machine plugged in to one of our secondary phone lines. The machine is set to 'Never Answer' and to 'Not Ring'. On occasion, we will use it to send out various documents. Sometimes, it can be quicker than scanning, saving and e-mailing. We sometimes send a document to ourselves for a quick, lower resolution, electronic copy.
Also, if your internet connection goes down the phone line and the fax machine, may still work.
One interesting thing about an old fax machine is that you can send a secure document to another fax machine with zero chance it would get intercepted or hacked. Check our post on ultra secure document transfers.