An internet fax service lets you send and receive faxes over the internet — no phone line, no machine, no paper. This complete guide covers how internet faxing works, what features matter, and how to choose the right plan for individuals, small businesses, and healthcare teams.
Frequently Asked Questions
What is an internet fax service?
An internet fax service lets you send and receive faxes over the internet using email, a web browser, or a mobile app — no fax machine or phone line required. The service converts your digital document to fax format and routes it to any fax number worldwide.
Is an internet fax service HIPAA compliant?
It can be, but only if the provider uses end-to-end encryption and signs a Business Associate Agreement (BAA). Free-tier plans almost never meet HIPAA requirements. [mFax Business](https://mfax.to/business/) includes encryption and HIPAA compliance features on all paid plans.
How much does an internet fax service cost?
Pay-as-you-go plans start at $1–2 per page for occasional use. Monthly subscriptions range from $8–$20/mo for individuals to $20–$50/mo for business plans with virtual fax numbers and team features.
Can I keep my existing fax number when switching to an internet fax service?
Yes. Most internet fax services support number porting — you transfer your existing fax number to the new provider. The process takes 5–10 business days and requires submitting a Letter of Authorization (LOA) to your current carrier.
What is the difference between an internet fax service and email?
Email is not universally accepted for legal, healthcare, or financial document delivery. Internet fax routes documents to traditional fax machines using phone network standards, making it legally recognized in industries where email is not.