Guide

How does online faxing work?

Send a fax without your own fax machine - simple, digital, and from anywhere. This is how modern faxing over the internet works.

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Transmission report as proof

Quick answer

Online fax works by sending your digital document over the internet to a fax server, which then transmits it to the recipient's fax machine. You do not need your own fax machine, only a smartphone, tablet, or computer with internet access. With FaxMonkey, simply upload your document, enter the fax number, and pay, done.

How it works - step by step

In just 3 steps to a sent online fax

1

Upload document

Upload your document as a PDF, JPG, PNG, or Word file. All common formats are supported, directly from your smartphone, tablet, or computer.

2

Enter fax number

Enter the recipient's full fax number including country code (e.g. +49 for Germany). Our system automatically checks the correct format.

3

Pay and send

Pay securely via Stripe and click Send fax. You will receive a confirmation by email immediately.

What you need

Internet connection

Stable internet via Wi-Fi or mobile data (3G/4G/5G) on your device

Digital document

Your document as a PDF, JPG, PNG, TIFF, or Word file

Recipient fax number

The recipient's full fax number including country code

Your benefits

No fax machine needed

Save the cost and maintenance of a fax machine. Fax directly from your smartphone, tablet, or computer.

Available 24/7

Send faxes around the clock, 7 days a week, regardless of office hours or location.

Secure and GDPR-compliant

Encrypted transmission, automatic deletion. Your documents are deleted after delivery.

Legally valid delivery report

You receive proof of successful delivery by email, important for cancellations, deadlines, and legal documents.

Tips

  • Save your document as a PDF for optimal transmission quality and readability
  • Double-check the fax number for typos, wrong numbers cannot be refunded
  • Use high-contrast documents with black text on a white background

Important to know

  • Online faxes can only be sent to real fax machines, not to regular phone numbers
  • The recipient's fax machine must be powered on and ready to receive for delivery to succeed

Send a fax without owning your own fax machine? What once seemed unthinkable is everyday life today. Online fax makes it possible to send documents digitally while still arriving as a classic fax on the recipient's side. We explain how it works technically and why fax is still relevant today.

Whether you want to send a cancellation to your insurance company, forward a signed contract to your attorney, or fax a medical certificate to your employer, with online fax you can handle it in just a few minutes without owning a fax machine.

How does online fax work technically?

Online fax combines the advantages of the digital world with proven fax technology. Here is how the process works:

  • 1. Upload: You upload your document (PDF, image, Word) to our server
  • 2. Conversion: The document is converted into the fax format (TIFF)
  • 3. Transmission: Our fax server dials the recipient's fax number over the telephone network
  • 4. Reception: The recipient's fax machine prints the document, just like a normal fax

For you, the process is fully digital - for the recipient, a completely normal fax comes out of the machine. The technology behind it is complex, operation is as simple as possible.

Online fax vs. traditional fax: the differences

Why use online fax instead of buying a traditional fax machine? The advantages are compelling:

  • No hardware: No fax machine, no paper, no toner, no telephone line
  • Location independent: Fax from anywhere - at home, on the go, or on vacation
  • Available 24/7: Send faxes at any time, even at night or on weekends
  • Digital proof: Delivery reports are automatically sent and archived by email
  • More affordable: No acquisition costs, no maintenance, you pay only per use

The only difference for the recipient: they will not notice one. The fax comes out of their machine just like a classic fax.

When is fax still required today?

Despite email and digital communication, fax remains standard or even mandatory in many areas:

  • Public authorities and agencies: Registry offices, tax offices, immigration authorities often prefer fax
  • Courts: Time-sensitive documents are often filed by fax
  • Healthcare: Doctors, hospitals, pharmacies often communicate via fax due to data protection
  • Attorneys and notaries: Signed documents and powers of attorney are transmitted by fax
  • Cancellations: Insurance companies, gyms, mobile carriers - fax is considered secure proof of delivery
  • Banks and financial institutions: Orders and authorizations often require fax transmission

The reason: fax provides a delivery confirmation with proof that is recognized in court, unlike a simple email.

Frequently asked questions

What is the difference between online fax and a normal fax?

With a traditional fax, you need a physical fax machine with a telephone line. With online fax, a fax server takes over this task: your digital document is sent over the internet to the server, which then transmits it over the telephone network to the recipient's fax machine. The result is identical, the recipient receives a normal fax.

Is online fax just as legally secure as a normal fax?

Yes, online fax has the same legal validity as a conventional fax. You receive a delivery report with date, time, and recipient fax number as proof. This is recognized by authorities, courts, and companies as proof of delivery, ideal for cancellations and time-sensitive documents.

How much does an online fax with FaxMonkey cost?

The first page costs 1,00 €, each additional page only 0,25 €. There is no base fee, no subscription, and no hidden costs. You pay only when you actually send a fax, securely via Stripe.

Who still needs fax today?

Surprisingly many institutions still require or accept fax: public authorities and agencies, courts, doctors and hospitals, law firms, insurance companies, banks, and notaries. Especially for cancellations, signed contracts, and time-sensitive documents, fax is often the most secure or required transmission method.

How fast does an online fax arrive?

Usually your fax reaches the recipient within 1-5 minutes. The exact duration depends on the availability and speed of the recipient's fax machine. If the line is busy, our system automatically attempts multiple deliveries. You will be notified by email as soon as delivery was successful.

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