How to fax from a computer: Send documents quickly and securely

10 min read

Published on March 17, 2026

How to fax from a computer: Send documents quickly and securely

In this blog

01 Why fax from a computer? - Jumplink to Why fax from a computer?
02 What you need to fax from a computer - Jumplink to What you need to fax from a computer
03 What is online faxing and how does it work? - Jumplink to What is online faxing and how does it work?
04 How to send a fax from a computer: Step by step - Jumplink to How to send a fax from a computer: Step by step
05 How to send a fax via email - Jumplink to How to send a fax via email
06 How to receive a fax on your computer - Jumplink to How to receive a fax on your computer
07 How to send a fax online using Windows or Mac - Jumplink to How to send a fax online using Windows or Mac
08 Tips for faxing from a computer - Jumplink to Tips for faxing from a computer
09 Is computer faxing secure? - Jumplink to Is computer faxing secure?
10 What to look for in an online fax service - Jumplink to What to look for in an online fax service
11 Simplify your faxing with Zoom Phone - Jumplink to Simplify your faxing with Zoom Phone
12 Frequently asked questions - Jumplink to Frequently asked questions

Still need to send a fax but don't want to dust off an old machine? You're not alone. Many businesses still rely on faxing for legal, medical, and government documents — but the process has gone fully digital. Today, you can learn how to fax from a computer in just a few steps, no phone line or bulky hardware required.

Whether you need to send a signed contract, submit insurance paperwork, or transmit sensitive records, online fax services make it simple. This guide walks you through exactly how to fax from a computer, why it's better than traditional faxing, and what to look for in an online fax solution — so you can fax documents from your desktop or laptop with confidence.

Before diving into the how, it's worth understanding why computer-based faxing has become the go-to method for modern businesses.

No fax machine required. Save on hardware costs, maintenance, and the desk space a physical machine takes up. All you need is a computer and an internet connection.

Fax from anywhere. Send and receive faxes from your laptop, desktop, or even your smartphone — whether you're in the office, at home, or on the road.

Faster and more reliable. Fewer busy signals, no jammed paper, no running out of toner. Digital faxes are often delivered in seconds and confirmed automatically.

Better security. Many online fax services encrypt your transmissions and store documents securely in the cloud — often far safer than paper faxes sitting in an open output tray.

Easy document management. Digital faxes are stored, searchable, and easy to share or archive. No filing cabinets needed.

Cost savings. Eliminate the expense of a dedicated fax phone line, paper, ink, and hardware maintenance.

Better for the environment. Digital faxing is paperless by default, which means less waste and a smaller footprint for your business.

Faxing from a computer doesn't require any special hardware. Here's your checklist:

A computer, laptop, or mobile device
An internet connection
An online fax service or VoIP phone system with fax capability (like Zoom Phone)
The document you want to fax (PDF, Word, image file, etc.)
The recipient's fax number

That's it. No fax machine. No phone line. No paper.

Online faxing lets you send and receive faxes through the internet instead of a traditional fax machine. Rather than printing a document and feeding it through a physical device, you upload a digital file — like a PDF or Zoom Doc — to an online fax service. The service converts your file into a fax-compatible format and transmits it over phone lines to the recipient's fax machine or online fax account.

When someone sends you a fax, the process works in reverse. The service captures the incoming fax signal, converts it into a digital file (typically a PDF), and delivers it straight to your email inbox or online portal. Think of it as a bridge between the digital world and traditional fax infrastructure — all managed through your computer.

Sending a fax from your computer takes just a few minutes once you're set up. Here's how to fax documents using an online fax service:

Step 1: Choose an online fax service. Sign up with a provider that fits your needs. Many modern business communication platforms — including Zoom Phone — include online fax as a built-in feature. Look for a provider that uses security features like TLS encryption to protect data in transit, and supports common file formats (PDF, DOCX, JPG, PNG, TIFF).

Step 2: Set up your account and fax number. Create your account and configure your fax number. Depending on the platform, you may be able to get a new dedicated fax number, use your existing business phone number for faxing, or port a current fax number from another provider. With Zoom Phone, your fax number can be managed alongside your business phone numbers — keeping everything in one place.

Step 3: Prepare your document. Make sure your file is in a supported format. PDF is recommended for the best formatting consistency, but most services also accept Word documents (.doc, .docx), spreadsheets, and image files (JPEG, PNG, TIFF). If your document is on paper, scan it first using a scanner or smartphone scanning app — aim for 300 DPI or higher for clear, legible results.

Step 4: Compose and send your fax. Click "Send Fax" or "New Fax," enter the recipient's fax number including the country and area code, and attach your document. Most platforms let you add a cover page with a subject line and brief message for context. Review the details and hit send.

Step 5: Confirm delivery. You'll receive a delivery confirmation via email or in your account dashboard, giving you a timestamped record that your fax was successfully transmitted. Save these confirmations — especially for legal, medical, or compliance-related faxes.

The entire process typically takes under two minutes from login to send.

One of the most convenient ways to fax documents is directly through your email client. Many online fax services include an email-to-fax feature that turns any email into a fax transmission. Here's how to send a fax via email:

Open a new email in your preferred client (Zoom Mail, Gmail, Outlook, Apple Mail, etc.).
Address it to the recipient's fax number followed by your fax service's domain. For example, if the fax number is 1-800-555-1234, you'd enter something like 18005551234@yourfaxservice.com. Check your provider's specific format.
Attach your document. Add the file you want to fax — PDFs, Word docs, and images are typically supported.
Add a cover page (optional). The subject line and email body often serve as the fax cover page. Include any relevant context or instructions for the recipient.
Click send. Your fax service converts the email and attachments into a fax and delivers it. You'll get a confirmation email once it's been transmitted.

This method is especially handy when you're already working in your inbox and need to send a quick fax without switching to another platform. It also works from your phone or tablet — so yes — you can fax from your phone using the same email-to-fax method.

Receiving faxes on your computer is just as simple as sending them. Once you have an account with an online fax service, you'll be assigned a dedicated fax number. Anyone can send a fax to that number — whether they're using a traditional fax machine or another online service.

Here's what happens when a fax arrives:

The incoming fax is captured by your service provider's servers.
It's converted into a digital file, usually a PDF.
The file is delivered to your email inbox as an attachment, or it appears in your online fax portal.

You can receive a fax via email without being at your desk, which means important documents reach you wherever you are. Whether you're at home, traveling, or between meetings, you'll always be able to receive a fax via email the moment it arrives. Most services also store your received faxes in a searchable cloud archive, so you can retrieve them anytime. You can view, download, print, forward, or even sign and fax back digitally — without ever touching paper.

If your business handles a high volume of incoming faxes, look for a service that supports multiple email recipients per fax number — that way, your entire team stays in the loop.

Beyond dedicated online fax services, your computer's operating system may offer built-in options for faxing.

Windows Fax and Scan

Windows includes a free tool called Windows Fax and Scan that lets you send faxes — but it requires a fax modem connected to a landline. Here's the process:

Connect a fax modem to your computer and a working phone line.
Open Windows Fax and Scan from the Start menu.
Click New Fax and follow the setup wizard if it's your first time.
Enter the recipient's fax number and attach your document.
Click Send.

This method works for occasional faxing if you already have the hardware, but it lacks the flexibility and features of a cloud-based online fax service.

Mac users

macOS no longer includes native fax support, so Mac users will want to use a web-based online fax service accessed through their browser. The process is the same as the step-by-step guide above — sign up, log in, upload, and send. No additional software required.

Can I send a fax from my phone?

Yes. Most online fax services offer mobile apps for iOS and Android, or you can use the email-to-fax method described above. Snap a photo of a document with your phone's camera, attach it, and send — it's that simple. This makes it possible to send a fax online from virtually any device, anywhere.

A few best practices to help your faxes go smoothly:

Always use PDF format when possible. PDFs preserve formatting across devices and are universally accepted by fax services. Convert Word docs or images to PDF before sending for the most consistent results.
Double-check the fax number. Unlike email, there's no "unsend" option once a fax is transmitted. Verify the number before hitting send.
Use a cover page for formal transmissions. Include your name, company, contact information, and the number of pages being sent. Most platforms let you create one digitally.
Save your delivery confirmations. For legal, medical, or compliance-related faxes, keep your transmission receipts as a record of delivery.
Check file size limits. Most online fax services have a maximum file size per transmission. Compress large documents if needed.
Enable fax notifications. Set up alerts for incoming faxes so you don't miss time-sensitive documents.

Security is a common concern — especially for industries like healthcare, legal, and finance where faxing is used to transmit sensitive information. The short answer: computer-based faxing is often more secure than traditional fax machines, depending on the provider and configuration.

Reputable online fax services help protect your documents through:

Encryption. Online fax transmissions can be encrypted in transit and at rest , helping to protect your data throughout the process.
HIPAA enablement. Many services offer plans with HIPAA safeguards to support healthcare providers and other organizations handling protected health information.
Access controls. Received faxes can be restricted to authorized users in the platform — unlike a physical fax machine where documents sit in an open tray for anyone to see.
Secure cloud storage. Documents are typically stored in a protected cloud environment with retention policies you can configure to meet your compliance requirements.

Traditional fax machines leave printed documents exposed in output trays, require physical access controls, and offer no encryption. Computer-based faxing can reduce or mitigate many of these vulnerabilities.

Not all fax services are created equal. When choosing a provider to fax from your computer, look for these key features:

Reliability and delivery confirmation. Choose a service with a high uptime SLA (99.9% or better) and automatic delivery confirmations. You need to know your fax arrived, especially for time-sensitive documents.

File format support. Make sure the service accepts the formats you use most — PDF, DOCX, JPG, PNG, and TIFF are standard. Some services support dozens of additional formats.

Cloud integration. The ability to pull documents directly from Google Drive, Dropbox, OneDrive, or other cloud storage platforms saves time and keeps your workflow seamless.

Pricing that fits your volume. Pay-per-fax plans work well for occasional use, while monthly subscriptions with page allowances are more cost-effective for regular faxing. Compare plans carefully to avoid overpaying.

Mobile access. If you need to fax on the go, confirm the service offers a mobile app or supports email-to-fax from any device.

Fax number options. Can you get a dedicated fax number, use your existing business number, or port a number from another provider? Flexibility here matters.

If you're looking for a modern communication platform that brings calling, messaging, meetings, and faxing together, Zoom Phone online fax is designed for businesses that want faxing to be simple and secure.

With Zoom Phone, you can send and receive faxes from the same platform you already use for calls, SMS, meetings, and chat. There's no need to juggle a separate fax service or manage extra bills — everything lives in one place. Key benefits include:

Send and receive faxes online using your existing Zoom Phone number — no physical fax machine, dedicated phone line, or additional hardware needed.
Safeguard sensitive documents with encryption and custom policy controls.
Seamless integration tightly woven into Zoom Phone, so faxing fits naturally into your existing workflow.
Built for teams — faxes can automatically reach team members, auto receptionists, call queues, and shared line groups, and you can send to up to 50 recipients at once.
Easy setup — if you already use Zoom Phone, online fax is built right in with no complicated installations.

For small businesses in healthcare, legal, financial services, and beyond, Zoom Phone can reduce the complexity of faxing. You get security and compliance features that industries like these demand, within a platform designed to support the way your team collaborates every day.

Explore

How do I send a fax from my computer?

Sign up for an online fax service, log in to the web portal, enter the recipient's fax number, upload your document, and click send. The service handles the transmission and sends you a delivery confirmation. The entire process takes just a few minutes.

Can I fax from my computer without a phone line?

Yes. Online fax services use the internet to send and receive faxes, so you don't need a landline or fax modem. All you need is a computer with an internet connection and an account with a fax service provider.

How do I send a fax via email?

Compose a new email, address it to the recipient's fax number followed by your fax provider's domain (e.g., 18005551234@faxservice.com), attach your document, and hit send. Your fax service converts the email into a fax and delivers it.

Can I send a fax from my phone?

Yes. Most online fax services offer mobile apps, or you can use the email-to-fax method from any smartphone. You can even photograph a document with your phone's camera and fax it directly.

Is it secure to send a fax over the internet?

Reputable online fax services use encryption to protect your documents. Many also offer features designed to compliance with standards like HIPAA and GLBA for industries that handle sensitive information. In many cases, computer-based faxing is more secure than traditional fax machines.

How do I receive a fax on my computer?

Once you have an online fax account, you'll get a dedicated fax number. Incoming faxes are converted to PDF and delivered to your email inbox or online portal. You can receive a fax via email from anywhere with an internet connection.

Do I need special software to fax from a computer?

No. Most online fax services work entirely through your web browser. Some also offer desktop applications or email-to-fax functionality, but no specialized fax software is required.

Can I fax from my computer for free?

Some services offer limited free fax plans, but most businesses use a paid service for reliability, security, and higher volume. Many business phone plans — like Zoom Phone — include fax as part of the subscription, with included usage depending on the plan and options for additional usage if needed.

Do I need a fax number to fax from a computer?

Yes. You need a fax number to send from and for recipients to send to. Online fax services provide dedicated fax numbers when you sign up, and some platforms let you use your existing business number or port a number from another provider.

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