Everything you need to know about online fax services — how they work, what to look for, and how to choose the right one for your business.
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An online fax service lets you send and receive faxes using the internet instead of a traditional phone line and fax machine. Instead of printing a document, feeding it into a machine, and dialing a number, you simply upload a file and click send.
With an online fax service like usfax.com, you get a dedicated US fax number that works just like a regular fax number. Other people and businesses can send faxes to your number, and those faxes arrive as PDF attachments in your email or online dashboard. No hardware. No phone line. No toner.
Online faxing has become the standard for US businesses because it eliminates the cost and hassle of maintaining physical fax machines while adding features like encryption, delivery confirmation, and cloud storage that traditional faxing simply cannot provide.
Three simple steps — no fax machine, no phone line, no paper.
Upload a PDF, Word doc, or image from your computer, phone, or email. No printing or scanning needed.
Type the recipient's fax number, add an optional cover sheet, and hit send. Your fax is transmitted over the internet to any fax machine or online fax service.
Incoming faxes arrive as PDF attachments in your email or app. No paper, no toner, no waiting by the machine.
Not all online fax services are created equal. Here are the eight features that matter most when choosing a provider.
Get a local or toll-free US fax number that's yours to keep. Port your existing number or choose a new one.
Send faxes from any device and receive them as PDFs in your email inbox or online dashboard.
Send faxes directly from your email client. Attach a document, enter a fax number, and hit send.
Fax from your iPhone or Android phone. Snap a photo of a document and fax it instantly from anywhere.
HIPAA compliant plans with BAA, encryption, and audit trails for healthcare providers handling PHI.
Get instant notifications when your fax is delivered. Full transmission reports for every fax sent.
All sent and received faxes are stored securely in the cloud. Search, download, and re-send anytime.
Add multiple users, share fax numbers, and manage permissions. Admin panel with usage reports.
Online faxing is used across virtually every industry where documents need to be transmitted quickly and securely. Here are the most common use cases.
Medical offices, hospitals, and dental practices use online fax to securely transmit patient records, referrals, and prescriptions while staying HIPAA compliant.
Learn moreLaw firms and attorneys rely on fax for court filings, contracts, and time-sensitive legal documents. Online fax adds delivery confirmation and audit trails.
Learn moreReal estate agents use fax for purchase agreements, closing documents, and disclosures. Send from your phone while on the go between showings.
Learn moreSmall businesses use fax for invoices, purchase orders, vendor communications, and government forms. No hardware to maintain, no phone line to pay for.
Learn moreHere is how online faxing compares to a traditional fax machine across the metrics that matter most.
| Feature | Traditional Fax | Online Fax |
|---|---|---|
| Monthly cost | $30–$60+ | $12–$49 |
| Setup time | Buy hardware, install line | Sign up in 2 minutes |
| Speed | 1–3 min per page | Seconds per page |
| Reliability | Busy signals, paper jams | 99.9% uptime |
| Security | Documents sit in open tray | Encrypted end-to-end |
| Mobility | Office only | Any device, anywhere |
With dozens of online fax providers available, here are the five things you should evaluate before choosing one.
How many faxes do you send per month? If you fax rarely, a pay-per-fax plan may be cheapest. For regular faxing, a subscription with included pages saves money.
Do you handle healthcare data, legal documents, or financial records? Look for a service that offers HIPAA compliance, BAA, and encryption standards that meet your industry requirements.
Do you want to fax from email, a web app, or a mobile app? Consider whether you need API access or integrations with tools like Google Drive, Dropbox, or your EHR system.
How many people need to send or receive faxes? Solo users can use individual plans, while teams need multi-user support with shared numbers and admin controls.
Do you have an existing fax number you need to keep? Make sure the service supports number porting so your contacts can reach you at the same number.
usfax.com gives you everything you need to send and receive faxes online — a dedicated US fax number, email integration, mobile access, and HIPAA compliance options. Start with a free trial and see how easy online faxing can be.
Join thousands of US businesses that have ditched the fax machine. No credit card required.