Still used a lot in business. Frankly, it's still easier than scanning in a document and emailing it.
If your fax/scan machine is not too antiquated, it can email documents too! I used to have one at work, but I stopped going there a few years ago. It was too depressing.
Actually, if you have direct email send funtion than it is pretty convinient since scanning document with a phone does not give you same quality when it comes to shape of the scan. Nevertheless, scan maschines are damn slow and noisy.