What do I need to send a fax via the internet?

All you need is a device with an internet connection (phone, tablet, or computer) and the document you want to send. An online fax service like [mFax.to](https://mfax.to) handles the rest — no fax machine, phone line, or paper required.

Is faxing via the internet secure?

Yes — reputable internet fax services use 256-bit TLS encryption during transmission and store documents with AES-256 encryption at rest. Look for services that offer a Business Associate Agreement (BAA) if you need HIPAA compliance. For more, see our guide to [HIPAA-compliant fax services](/blog/best-hipaa-compliant-fax-services/).

Can I fax via the internet for free?

Yes, for occasional use. Services like FaxZero let you send up to 5 faxes per day (3 pages each) at no cost. For regular faxing, a paid subscription from $6–$20/month typically works out cheaper per page. See our [free internet fax guide](/blog/free-internet-fax/) for a full comparison.

What file formats can I send as an internet fax?

Most internet fax services accept PDF, DOCX, DOC, JPG, PNG, and TIFF. PDF is the most reliable format and preserves your document's layout exactly as it will appear on the recipient's end.

How is internet fax different from email?

Internet fax delivers to a fax number (not an email address), so it reaches traditional fax machines and other online fax services. Unlike email, fax has a legal transmission record (a delivery confirmation), making it preferred for contracts, medical records, and court filings where proof of delivery matters.

How to Fax via the Internet: Complete Beginner Guide

Faxing via the internet is easier than you think — no machine, no phone line, no paper required. This beginner guide covers three simple methods, step-by-step instructions, cost breakdowns, and security tips so you can send your first internet fax in under five minutes.

Frequently Asked Questions

What do I need to send a fax via the internet?: All you need is a device with an internet connection (phone, tablet, or computer) and the document you want to send. An online fax service like [mFax.to](https://mfax.to) handles the rest — no fax machine, phone line, or paper required.
Is faxing via the internet secure?: Yes — reputable internet fax services use 256-bit TLS encryption during transmission and store documents with AES-256 encryption at rest. Look for services that offer a Business Associate Agreement (BAA) if you need HIPAA compliance. For more, see our guide to [HIPAA-compliant fax services](/blog/best-hipaa-compliant-fax-services/).
Can I fax via the internet for free?: Yes, for occasional use. Services like FaxZero let you send up to 5 faxes per day (3 pages each) at no cost. For regular faxing, a paid subscription from $6–$20/month typically works out cheaper per page. See our [free internet fax guide](/blog/free-internet-fax/) for a full comparison.
What file formats can I send as an internet fax?: Most internet fax services accept PDF, DOCX, DOC, JPG, PNG, and TIFF. PDF is the most reliable format and preserves your document's layout exactly as it will appear on the recipient's end.
How is internet fax different from email?: Internet fax delivers to a fax number (not an email address), so it reaches traditional fax machines and other online fax services. Unlike email, fax has a legal transmission record (a delivery confirmation), making it preferred for contracts, medical records, and court filings where proof of delivery matters.