A junk fax is like a piece of junk mail, except you pay for the printing costs. It’s an advertisement that you did not request or consent to receive that arrives via your fax machine. Junk faxing wastes our time and resources at home and at the office.
The Federal Communications Commission’s (FCC) Unwanted Faxes fact sheet (PDF) outlines the rules about sending unsolicited advertisements via fax machines.
Junk faxing can cause: