I use faxaway.com, haven't had a fax machine in years. You send it via email (& receive all faxes in PDF form as well). Costs me about $10-10 per year. You just load it up with like $10 bucks and they reload when you've used it up, something like 10 cents a fax
Lol. I still have a landline so when my 'puter had a fax modem, I could send it thru that. I haven't tried to fax in awhile since most people accept email attachments.