A fax blast sends one document to hundreds or thousands of recipients at once. Learn how fax broadcasting works, the TCPA rules that govern it, legitimate use cases, and how to run a compliant fax blast campaign in 2026.
Frequently Asked Questions
What is a fax blast?
A fax blast (also called fax broadcasting or broadcast faxing) is the near-simultaneous transmission of a single fax document to a large number of recipients in one send operation. Modern cloud-based platforms handle the dialing, retries, and delivery reporting automatically.
Is fax blasting legal?
Yes — fax blasting is legal when done correctly. Under the TCPA and the Junk Fax Prevention Act of 2005, you must either have an established business relationship with recipients or their express prior consent. Every fax advertisement must also include a compliant opt-out notice on the first page.
How much does a fax blast cost?
Most fax blast services charge per page delivered, typically $0.01–$0.06 per page. Sending 1,000 single-page faxes can cost as little as $10–$60 with no monthly subscription required.
What is the penalty for sending an illegal fax blast?
The TCPA imposes $500 per fax for unintentional violations and up to $1,500 per fax for knowing or willful violations. A campaign of 10,000 illegal faxes could generate $5 million to $15 million in total liability.
How do I stop receiving fax blasts?
Use the opt-out notice required on every legal fax ad — by law, the sender must stop within 30 days. You can also file a complaint with the FCC at consumercomplaints.fcc.gov or call 1-888-225-5322. For persistent spam, see our guide on [stopping junk faxes](/blog/junk-fax-spam/).