Do I need a fax machine or phone line to receive a fax?

No. An online fax service receives the call on its own servers and turns the fax into a digital PDF, so you don't need a fax machine, a landline, or any hardware. You just need an internet connection and the email account or app where your faxes are delivered.

How do I get a fax number to receive faxes?

You get one when you sign up for an online fax service — pick a new local or toll-free number during setup. If you already have a fax number you want to keep, most providers let you port (transfer) it in, which is usually free and takes a few business days. During the transfer your old line keeps working until the port completes.

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How to Receive a Fax Online

Q: How do I receive a fax online?

Sign up with an online fax service that offers a dedicated inbound number (Fax.Plus, eFax, CocoFax and SRFax all do), choose a new local or toll-free number or port your existing one, and share that number with senders. When someone faxes it, the service converts the call into a PDF and delivers it to your email, mobile app, or online dashboard.

Q: Can I receive a fax for free?

Receiving for free is harder than sending for free. Most genuinely free tools — like FaxZero — are send-only, because receiving requires a dedicated number that providers charge for. The realistic free routes are a provider's free trial, or a low-cost plan that includes an inbound number. If you only need to receive once, a short paid month is usually cheaper than any workaround.

Q: Where do received faxes go?

Wherever you choose. Most services deliver each incoming fax as a PDF to your email inbox, and also store it in your online dashboard and mobile app. You can typically add several recipient emails, get push or text notifications, and download or forward the PDF like any other file.

Q: Can I receive a fax by email?

Yes — that's the most common setup. The service attaches each received fax as a PDF to an email and sends it to the address (or addresses) you configured. You read it like any attachment. To reply by fax, you send back through the provider's app, portal, or email-to-fax address rather than replying to the email itself.

You don't need a fax machine or a phone line to receive a fax anymore. Sign up for an online fax service, get an inbound number, and incoming faxes land in your email or app as a PDF. Here's exactly how it works — and how to do it free if you only need it once.

The short version: receiving a fax online means a service gives you a dedicated fax number, answers the call for you, and delivers the fax as a PDF to your email, app, or dashboard. The one catch: free send-only tools can't receive — you need a plan that includes an inbound number.

Most people are set up and receiving within about ten minutes.

How to receive a fax online: an inbound fax number delivers incoming faxes as a PDF to email and app — An online fax service answers the call and delivers each fax to you as a PDF

How to receive a fax online in 3 steps

No hardware, no landline — just a number and somewhere to send the PDF.

1. Pick a service that receives

Not every option can receive. Free send-only tools like FaxZero can't — you need a service with a dedicated inbound number. Fax.Plus, eFax, CocoFax and SRFax all receive on a paid plan.

2. Get a fax number

Choose a new local or toll-free number when you sign up, or port your existing fax number across (usually free, takes a few business days). This number is what senders dial to reach you.

3. Faxes arrive as a PDF

When someone faxes your number, the service answers the call, converts it to a PDF, and delivers it — to your email inbox, the mobile app, or your online dashboard, with a notification.

What "receiving a fax online" actually means

A traditional fax needs a machine plugged into a phone line, sitting there waiting for a call. Online fax moves that whole job to the cloud. The service owns a real fax number and a bank of servers that answer incoming calls 24/7. When a fax comes in, those servers do the "handshake" with the sending machine, capture the pages, and turn them into a PDF — then push that file to wherever you asked: an email inbox, a mobile app, or a web dashboard.

For you, that means a fax can arrive while your computer is off and you're away from your desk. There's nothing to keep powered on, no busy signal, no paper jam, and no second phone line to pay for. You just open the PDF when the notification arrives.

Can you receive a fax for free?

This is where receiving differs from sending. You can send a fax for free all day — FaxZero and similar tools exist for exactly that. Receiving for free is much rarer, because a fax has to arrive somewhere, and that "somewhere" is a dedicated phone number the provider has to lease and keep online for you. Numbers cost money, so they sit behind a paid plan.

The honest free routes are narrow: a provider's free trial (you get a real inbound number for the trial window), or a small monthly plan that bundles a number. If you only need to catch a single incoming fax — a signed contract, a medical record — the cheapest answer is usually a one-month plan you cancel afterward, not a free workaround that doesn't really exist.

Keep your existing fax number

Already have a fax number people use? You don't have to give it up. Most online fax services let you port (transfer) an existing number onto their platform — it's typically free, and takes a few business days while the carriers hand it over. Crucially, your old line keeps receiving during the transfer, so you won't miss anything mid-port.

If you're switching from an old machine or a number tied to your phone provider, start the port early and don't cancel the old service until the transfer confirms. Once it lands, every fax to that familiar number arrives as a PDF instead of a printout.

Best services for receiving a fax

From our 2026 ranking — note that the free, send-only option can't receive at all.

Service	Receive faxes	Free route	Notes
Fax.Plus	Yes — local & toll-free	Paid plans (free tier is send-focused)	Our overall #1; reliable inbound numbers in 90+ countries and a clean inbox/app.
eFax	Yes — local or toll-free	Free trial, then paid	Long-established; pairs a receiving number with email delivery.
CocoFax	Yes — dedicated number	30-day money-back, then paid	Lowest-priced paid plan with a send-and-receive number; a 30-day money-back window to test it.
SRFax	Yes — US & Canada	Free trial, then paid	HIPAA-ready receiving for healthcare; faxes land in a secure portal.
FaxZero	No — send only	Free to send	Great for free sending, but it can't give you a number to receive on.

Need to send too? See the full picture in our best online fax services ranking, or learn how to send a fax without a machine.

Frequently Asked Questions

How do I receive a fax online?

Sign up with a service that offers an inbound number (Fax.Plus, eFax, CocoFax and SRFax all do), pick a new local/toll-free number or port your existing one, and share it with senders. Incoming faxes are converted to a PDF and delivered to your email, app, or dashboard.

Can I receive a fax for free?

Rarely. Most free tools like FaxZero are send-only, because receiving needs a dedicated number providers charge for. The realistic free routes are a free trial or a low-cost plan with a number. For a one-off, a single paid month you cancel is usually cheapest.

Do I need a fax machine or phone line?

No. The service answers the call on its servers and turns the fax into a PDF, so there's no machine, landline, or hardware to maintain — just an internet connection and the inbox or app where faxes arrive.

How do I get a fax number to receive on?

You get one when you sign up — choose a new local or toll-free number, or port an existing one in (usually free, a few business days). Your old line keeps working until the transfer completes.

Where do received faxes go?

Wherever you set. Most services email each fax as a PDF and also store it in your dashboard and app. You can usually add multiple recipient emails, get notifications, and download or forward the file like any attachment.

Can I receive a fax by email?

Yes — it's the most common setup. The service attaches each received fax as a PDF and emails it to the address you chose. To reply by fax, send back through the provider's app, portal, or email-to-fax address rather than replying to the email.

Ready to start receiving faxes?

Find a service with a reliable inbound number in our independent 2026 ranking.

See the Best Services Free Fax Options