What is internet fax and how does it work?

Internet fax converts your documents into fax-readable data and transmits them over the internet using the T.38 protocol, instead of a traditional phone line. You upload a file through a web app, email, or mobile app — the service handles delivery to any standard fax machine or fax inbox.

Is internet fax secure?

Yes. Reputable internet fax services use 256-bit AES encryption at rest and TLS 1.2+ in transit — stronger than unencrypted email and comparable to traditional fax. For healthcare use, look for HIPAA compliance and a signed Business Associate Agreement (BAA).

How much does internet fax cost?

Internet fax plans start at around $7–$17/month for basic tiers covering 150–300 pages. Pay-per-page options run $0.03–$0.10 per page after your monthly allowance. Free tiers exist but cap at 5–20 pages.

Do I need special equipment to use internet fax?

No. All you need is an internet connection and a device (phone, tablet, or computer). No fax machine, dedicated phone line, ink, or paper required.

Can I receive faxes with an internet fax service?

Yes. Every internet fax account comes with a dedicated fax number. Faxes sent to that number arrive in your email inbox or app dashboard as PDF attachments, with delivery confirmation included.

Internet Fax: How It Works, Pricing & Online Alternatives

Internet fax lets you send and receive faxes over the web — no machine, no phone line, no paper. Learn how it works, what it costs, and how to get started in minutes with mFax.

Frequently Asked Questions

What is internet fax and how does it work?: Internet fax converts your documents into fax-readable data and transmits them over the internet using the T.38 protocol, instead of a traditional phone line. You upload a file through a web app, email, or mobile app — the service handles delivery to any standard fax machine or fax inbox.
Is internet fax secure?: Yes. Reputable internet fax services use 256-bit AES encryption at rest and TLS 1.2+ in transit — stronger than unencrypted email and comparable to traditional fax. For healthcare use, look for HIPAA compliance and a signed Business Associate Agreement (BAA).
How much does internet fax cost?: Internet fax plans start at around $7–$17/month for basic tiers covering 150–300 pages. Pay-per-page options run $0.03–$0.10 per page after your monthly allowance. Free tiers exist but cap at 5–20 pages.
Do I need special equipment to use internet fax?: No. All you need is an internet connection and a device (phone, tablet, or computer). No fax machine, dedicated phone line, ink, or paper required.
Can I receive faxes with an internet fax service?: Yes. Every internet fax account comes with a dedicated fax number. Faxes sent to that number arrive in your email inbox or app dashboard as PDF attachments, with delivery confirmation included.