Fax Software for Windows 10: Everything You Need to Know

By Alexey Spasskiy · Published July 30, 2025 · Updated September 18, 2026 · 17 min read

Quick answer: The fastest fax software for Windows 10 is mFax for Windows — a free native app on the Microsoft Store. Install it, drag your document into the window, type the fax number, and send. No modem, no phone line, no drivers. Prefer not to install anything? mFax.to does the same job in any browser. Windows Fax and Scan is still free and already on your PC, but it needs a USB fax modem and an analog landline.

If you search for "fax software for Windows 10," you will find four very different categories of software lumped together: a native app you install from the Microsoft Store that transmits over the internet, the built-in Windows app, old-school desktop programs that install on your PC and dial out through a modem, and cloud-based services that run in a browser. They are not the same thing, and the right choice depends entirely on what hardware you have and how often you need to fax.

This guide breaks down every category of fax software available for Windows 10, how each type works, what it costs, and which one is worth your time in 2026.

What Does "Fax Software for Windows 10" Actually Mean?

Fax software for Windows 10 refers to any application — installed or browser-based — that lets your PC send or receive faxes. The term covers four distinct approaches:

1. Native internet fax apps — desktop software you install from the Microsoft Store that transmits over your internet connection instead of a phone line. mFax for Windows is the current example
2. Built-in Windows software — Windows Fax and Scan, included with every copy of Windows 10
3. Desktop fax programs — third-party software you install on your PC, typically paired with a USB fax modem
4. Online fax services — cloud-based platforms accessed through a web browser, no local installation required

The key difference between these categories comes down to hardware. Categories 2 and 3 require a physical fax modem connected to an analog phone line. Categories 1 and 4 require only an internet connection.

This page stays on Windows 10 — its quirks, its still-preinstalled copy of Windows Fax and Scan, and what the old desktop fax programs are still good for. If you are on Windows 11 or shopping across both, how to pick a fax app for Windows runs the same decision without the Windows 10 specifics.

Type 1: mFax for Windows (Native App, No Modem)

mFax for Windows is the newest category on this list — a native Windows app you install from the Microsoft Store that sends faxes over your internet connection. It shipped on 10 August 2026, which is why older "fax software for Windows" roundups do not mention it. It is the closest thing Windows has to a real fax program that does not need hardware: a proper desktop window with drag-and-drop, light and dark themes and keyboard shortcuts, but the transmission happens over the internet rather than a phone line.

On the Microsoft Store it is listed as mFax - Send and Receive FAX, published by Octagon Lab under Utilities & tools. Our mFax for Windows guide covers the app in full.

What It Requires

• Windows 10 version 17763.0 or higher — so any current Windows 10 or Windows 11 PC
• x64 or ARM64 — it runs natively on Copilot+ and Snapdragon machines, which is exactly where Windows Fax and Scan is not available at all
• An internet connection and an mFax account — no modem, no landline, no drivers
• About 46 MB of disk space

The app is free to install. Sending faxes and getting your own fax number require a paid subscription.

What It Does

• Send — drag and drop files into the window, paste an image straight from the clipboard, or pick a file from disk. International numbers get a country picker with live formatting, and you watch send progress with a time estimate.
• File types — PDF, Word (.doc/.docx), Excel (.xls/.xlsx), PowerPoint (.ppt/.pptx), OpenDocument (.odt/.ods/.odp), RTF, TXT, CSV, HTML, and images (PNG, JPG, BMP, GIF, WebP). They are converted to fax-ready pages automatically, so there is no need to print to PDF first.
• Edit before sending — reorder, rotate, duplicate, delete and extract pages; draw in seven ink colors; add text captions; sign with a mouse, trackpad or pen and place the signature; full undo/redo.
• Cover pages — generated from your name, contact details and a message, and markable Urgent, Confidential, For Review, Please Reply or Please Comment.
• Receive — pick your own fax number (choose country, then state or area, then filter by digits). Incoming faxes land in the app and open in a real desktop PDF viewer with zoom, fit width or page, rotation and thumbnails.
• Proof of delivery — every transmission is tracked and the receipt downloads as a shareable PDF. Failures are explained in plain language — busy line, no answer, no fax signal, number out of service — instead of a numeric error code.
• Teams — create an organization, invite colleagues by email, and share one workspace, fax number and history, switching between your personal and org workspace.
• Limits — up to 60 pages per fax and 20 MB per file.

How to Send a Fax with mFax for Windows

Get mFax for Windows — free on the Microsoft Store, no modem and no phone line. For the Windows 11 walkthrough, see our guide to faxing from Windows 11.

Type 2: Windows Fax and Scan (Built-In, Free)

Windows Fax and Scan is the fax application that ships with Windows 10. It has been part of Windows since Vista and remains a functional, no-cost option for anyone who already has the necessary hardware.

What It Does

Windows Fax and Scan handles both faxing and scanning from a single interface. On the fax side, it lets you:

• Compose and send faxes with cover pages
• Receive incoming faxes automatically
• Save faxes as drafts before sending
• View sent and received fax history
• Route received faxes directly to your email

What It Requires

• A USB fax modem — external USB devices like the USRobotics USR5637 ($30) or HiRO H50113 ($25) plug into any USB port. Windows 10 installs the driver automatically for most models.
• An analog (POTS) phone line — the traditional copper landline from a phone company. VoIP lines (the phone service bundled with most cable or fiber internet packages) do not work reliably with fax modems.
• A PC that actually has it — it ships with Windows 10 and Windows 11 on x64 machines, but it is not available at all on ARM-based Windows 11 PCs. See our Windows Fax and Scan on Windows 11 guide for the details.

How to Access It

Press Windows + S and type Windows Fax and Scan. If it does not appear, go to Settings → Apps → Optional Features → Add a feature and search for it. Installation takes under a minute and requires a restart.

For a full step-by-step walkthrough of using Windows Fax and Scan, see our dedicated Windows Fax and Scan guide.

Cost Breakdown

Type 3: Desktop Fax Software (Third-Party Programs)

Desktop fax software in this category is installed on your PC and works similarly to Windows Fax and Scan — it uses a connected fax modem and phone line. The difference is that third-party programs add features the built-in app lacks: schedulers, automatic retries, multi-recipient broadcasting, answering machine functionality, and OCR for reading received faxes.

These programs make sense for users who already have modem hardware and need more control over their fax workflow than Windows Fax and Scan provides.

Notable Options

VentaFax

VentaFax is one of the few actively maintained desktop fax programs for Windows. It combines fax sending and receiving with full answering machine functionality. Key features include:

• Built-in OCR that converts incoming fax images into searchable, editable text
• A fax scheduler for sending to multiple recipients at set times
• Custom cover page editor
• Color fax support
• 30-day fully functional free trial

VentaFax requires a fax modem and analog line, like all desktop software. Pricing starts at around $49 for the Home edition, with a Business edition available at a higher price point. The interface is dated by modern standards, but the software is reliable and actively supported.

Snappy Fax

Snappy Fax is a long-running Windows fax program with a focus on small businesses. It supports broadcast faxing to multiple recipients, fax-from-printer integration, and an address book. It requires a modem and analog line. The software is available as a one-time purchase.

WinFax PRO (Discontinued)

WinFax PRO was once the dominant desktop fax program for Windows. The last release was WinFax PRO 10 in 2000, and Symantec discontinued the product entirely. It is not recommended for Windows 10 — compatibility is poor, and there is no support or security updates.

Type 4: Online Fax Services (Browser-Based, No Install)

Online fax services do the same job as the mFax Windows app without installing anything. They run entirely in a browser — no download, no modem, no phone line. You upload a document, enter a fax number, and the service converts and delivers it over the internet. The recipient's fax machine receives it identically to a traditional fax.

How Online Fax Works on Windows 10

1. Open any web browser (Chrome, Edge, Firefox) on your Windows 10 PC
2. Navigate to the fax service's website or web app
3. Upload your document (PDF, Word, JPG, PNG, and more)
4. Enter the recipient's fax number
5. Click Send — the service transmits the fax over its network
6. Receive a delivery confirmation in your dashboard and by email

No drivers. No hardware setup. No phone bill. The entire process typically takes under two minutes.

mFax.to for Windows 10

mFax.to is the top choice for Windows 10 users looking for a reliable, no-hardware-required fax solution. With over 5 million users and a 4.8 App Store rating, it handles the heavy lifting — document conversion, transmission, and delivery confirmation — entirely on its servers.

Key capabilities:

• Supports PDF, DOCX, DOC, JPG, PNG, TIFF, and most other common document formats
• Delivers a confirmation receipt within seconds to a few minutes
• Works in any web browser on Windows 10 — Chrome, Edge, Firefox
• Optional cover page generation
• Send and receive faxes from the same account
• Same account as mFax for Windows — install the desktop app whenever you like and your fax history is already there
• mFax Business adds HIPAA compliance, virtual fax numbers, team accounts, and audit logs

Other Online Services

Several other services compete in this space:

• eFax — one of the oldest online fax providers, with an Outlook plug-in and enterprise features. Pricing starts around $16.95/month.
• Fax.Plus — offers a free tier (10 pages/month) and has a desktop app for Windows alongside the web version.
• PamFax — pay-per-fax model starting at $0.11/page, good for occasional users with no monthly commitment.
• iFax — HIPAA-compliant, strong for healthcare workflows, compatible with Windows, Mac, iOS, and Android.

Full Comparison: All Fax Software Types for Windows 10

Bottom line: For anyone without a modem and dedicated analog phone line already in place, the two internet-based options are faster, cheaper, and more reliable. Install mFax for Windows if you want faxing in your Start menu and drag-and-drop from File Explorer; stay in the browser if you fax twice a year and would rather not install anything. Desktop modem software adds value only if you have existing modem hardware and need features like scheduled batch sending or answering-machine integration.

How to Choose the Right Fax Software for Your Situation

Do you have a USB fax modem and an analog phone line?

• Yes → Windows Fax and Scan is free and already on your PC. If you need advanced features (scheduling, OCR, broadcast fax), add VentaFax.
• No → Skip the hardware entirely: install mFax for Windows from the Microsoft Store, or use an online service in your browser. The hardware cost ($25–$50 modem + $15–$40/month landline) rarely makes sense for occasional faxing.

Do you want an installed app or a browser tab?

• An app → mFax for Windows pins to the Start menu and taskbar, takes files dragged straight out of File Explorer, and lets you reorder, rotate and sign pages before sending.
• A browser → mFax.to needs nothing installed and works on a locked-down work PC where you cannot install software. Same account, same fax history.

How often do you fax?

• Rarely (a few times per year) → Pay-per-fax online service (mFax.to, PamFax). No subscription, no ongoing cost.
• Regularly (weekly or more) → A monthly subscription is cheaper than a phone line, and at this frequency the desktop app is worth installing so faxing is one click from the Start menu. mFax.to plans start at $9.99/month.
• High volume (business use) → mFax Business or iFax, both offering team accounts, virtual fax numbers, and audit logs.

Do you need HIPAA compliance?

Healthcare providers, insurers, and anyone handling protected health information must use a service that offers a Business Associate Agreement (BAA). Neither Windows Fax and Scan nor modem-based desktop programs qualify. mFax Business and iFax both provide HIPAA-ready plans with BAA agreements — an mFax Business plan covers web, mobile and the desktop app under one account. See our HIPAA compliant fax guide for full requirements.

Do you need to receive faxes?

All four options support receiving faxes. With modem-based software, your PC and modem must be on and connected to receive. Online services give you a dedicated virtual fax number — incoming faxes arrive in your dashboard or as email attachments, even when your PC is off. mFax for Windows works the same way: you pick your own fax number inside the app, and incoming faxes appear there in a full desktop PDF viewer.

Getting Started with mFax.to on Windows 10 (Browser Route)

The desktop app steps are further up this page. If you would rather not install anything — on a locked-down work PC, for example — here is the same job in the browser, with no hardware:

Troubleshooting Common Fax Software Problems on Windows 10

Windows Fax and Scan cannot find my modem

Open Device Manager (Windows + X → Device Manager) and look under Modems. If your USB modem shows a yellow warning icon, right-click and select Update driver. If it does not appear at all, unplug and replug the USB device, or try a different USB port. Some modems require a manual driver download from the manufacturer's website.

Fax sends but recipient gets a blank page

The document may not have converted correctly. Print the file to a PDF first using Microsoft Print to PDF (available in any Windows 10 print dialog), then attach the resulting PDF to your fax. PDFs convert more reliably than Word documents for modem-based faxing.

"Transmission failed" errors with Windows Fax and Scan

This usually has three causes:

• VoIP line — the most common cause. Your phone service runs over the internet, not a copper line. Switch to an internet-based option: the mFax Windows app or an online service.
• Wrong number format — try entering the number with a leading 1 (e.g., 15551234567).
• Busy recipient — fax machines can only receive one fax at a time. Wait 10–15 minutes and retry.

For a complete list of error codes and fixes, see our fax error codes guide.

Windows Fax and Scan is missing on my Copilot+ or Snapdragon PC

Windows Fax and Scan is not available on ARM-based Windows 11 PCs, so there is nothing to enable in Optional Features and no workaround to apply. Use an internet-based option instead — mFax for Windows ships an ARM64 build alongside the x64 one, so it installs and runs natively on those machines. Our ARM Windows and Surface Pro guide explains why the feature is absent and why a USB modem will not fix it.

Online service says my file format is unsupported

Convert the file to PDF first. Windows 10 includes a built-in PDF printer — open the document, press Ctrl + P, select Microsoft Print to PDF, and save. Then upload the PDF to the fax service. Alternatively, our free document converter handles Word, Excel, images, and more.

Fax Software for Windows 10: Frequently Asked Questions

Is there a fax app for Windows 10 and Windows 11?

Yes. mFax for Windows is a native desktop app on the Microsoft Store, listed there as "mFax - Send and Receive FAX". It runs on Windows 10 version 17763.0 or higher and on Windows 11, on both x64 and ARM64, and it sends over the internet — no modem and no phone line. It is free to install; sending faxes and getting your own fax number require a paid subscription.

Can I get fax software for Windows 10 for free?

Windows Fax and Scan is free and already on your PC. However, you need a USB fax modem and an analog phone line to use it — those cost $40–$90 to set up and $15–$40/month ongoing. mFax for Windows is a free Microsoft Store download, though sending faxes needs a paid subscription. Several online services offer free trials or limited free pages: mFax.to is free for its first 7 days and $7.99/month after that, and Fax.Plus offers 10 free pages per month on its free tier.

Is Windows Fax and Scan still supported in 2026?

Yes. Microsoft has not deprecated Windows Fax and Scan — it ships with Windows 10 and Windows 11. However, Microsoft has made no significant updates to the app in years, it still needs a fax modem and a landline, and it is not available at all on ARM-based Windows 11 PCs. It is functional but not actively developed. For its current setup steps, see our Windows Fax and Scan guide.

Can I fax from Windows 10 without installing any software?

Yes — that is exactly what online fax services provide. Open mFax.to or another online service in your browser, create an account, and send. Nothing downloads to your computer. If you would rather have a real app in your Start menu, mFax for Windows is a free Microsoft Store download.

What is the difference between fax software and an online fax service?

Traditional fax software installs on your PC and uses a connected modem to dial and transmit over a phone line. An online fax service transmits over the internet — you interact through a browser or app, and the provider's servers handle the actual fax transmission. mFax for Windows sits between the two: it is a real Windows app you install and open from the Start menu, but it transmits over the internet, so it needs no modem and no phone line.

Do I need a dedicated fax number to send faxes on Windows 10?

No — you can send faxes without having your own fax number. You only need a dedicated inbound fax number if you want to receive faxes. Online services like mFax.to provide a virtual fax number for receiving, and you can pick one inside mFax for Windows too — but sending is possible without one.

Summary

Fax software for Windows 10 falls into four categories, each suited for a different user:

For the vast majority of Windows 10 users — anyone without a fax modem and dedicated phone line already in place — mFax is the right call: install mFax for Windows from the Microsoft Store, or open mFax.to in a browser if you would rather not install anything. Either way it is faster to set up, less expensive to run, and does not depend on aging hardware that most modern PCs simply do not have.

For personal faxing, install mFax for Windows or open mFax in your browser — drag your document in, enter the fax number, and send in under 2 minutes.

For business teams, mFax Business gives you virtual fax numbers, HIPAA compliance, and shared team inboxes — starting at about $9/mo (billed annually). It's usage-based with no rigid fixed tiers: build your own plan with a live calculator by picking the exact seats and pages you need ($3/seat + $4 per 100 pages), and pay only for what you use.

For step-by-step instructions on every method — the Microsoft Store app, online, Windows Fax and Scan, Outlook, and network printer — see our complete guide to faxing from Windows 10. For a wider roundup of the programs themselves, see the best fax software for Windows.