How to send a fax online

Why send a fax online?

Fax machines may be disappearing from homes and offices, but fax itself is far from dead. Hospitals, government agencies, courts, banks, insurers, schools and many businesses still rely on fax because it provides a confirmed, printed delivery that email cannot guarantee. In several countries — including the United States, Germany and Japan — fax remains the legally preferred method for sending medical records, court filings and certain financial documents.

An online fax service lets you send a fax from any device. Computer, tablet or phone. Without owning a fax machine, installing software, or signing up for a monthly plan. You upload a document, enter the recipient's fax number, and pay per page. Most faxes are delivered within a few minutes, and you get a confirmation receipt the moment the receiving machine acknowledges the transmission.

unofax is built for people who need to send a fax once or twice a year — not for businesses that fax all day. There is no account, no subscription, no minimum spend. You only pay for what you send.

What you need to send a fax online

Sending a fax with unofax requires just four things:

• A document: PDF, Word, image or other supported file. Maximum 200 pages per fax.
• The recipient's fax number: including the country code (for example +1 for the US, +44 for the UK, +49 for Germany).
• A payment method: credit card, debit card, Apple Pay or Google Pay. Payment is processed securely by Stripe.
• Your email address: for the delivery confirmation and proof of receipt PDF.

No account, no subscription, no fax machine, no app to install. Just upload, pay and send.

Step by step: send a fax in 6 clicks

Here is exactly how it works from start to finish:

1. Upload your document: drag and drop or tap to select a file. unofax accepts PDF, Word (.doc, .docx), PNG, JPEG, GIF, WebP, HEIC, TIFF and more. Multiple files are merged in the order you upload them.
2. Enter the destination fax number: select the country and type the recipient's fax number. unofax formats the number for you and validates it in real time, so you cannot accidentally send to an invalid number.
3. Enter your email: provide your email address. We use it to send the delivery confirmation and the receipt PDF. We never send marketing emails and you can use a one-time inbox if you prefer.
4. Preview every page: scroll through the page-by-page preview to make sure everything looks right. This is exactly what the receiving machine will print. If a page is rotated, blank or cut off, fix it before paying — not after.
5. Add a free cover sheet (optional): if the recipient is a large office, a cover sheet helps the mailroom route your fax to the right person. unofax generates a free cover sheet in your language with one click.
6. Pay and send: the price is shown upfront with no hidden fees. Pay with card, Apple Pay or Google Pay. Your fax is queued immediately and you will receive a confirmation by email once it has been delivered.

That is it. Most faxes are delivered within 1 to 3 minutes. International faxes can take up to 10 minutes depending on the destination network.

Online fax vs. traditional fax machine vs. email

If you have only ever used a desktop fax machine — or you have been told to "just email it" — here is how the three options compare for a one-off fax:

For most people sending a fax once or twice a year — a tax form, a medical record release, an immigration document — an online fax service is the only option that does not require buying hardware, paying a monthly fee, or hoping the recipient will accept an emailed PDF.

What people use online fax for in 2026

Fax usage has dropped, but the situations where fax is still required have not gone away. These are the most common reasons people use unofax:

How much does it cost to send a fax online?

unofax is pay-as-you-go and the price is one flat rate worldwide. You pay $0.29 AUD per page — about 19 US cents — whether you are faxing across the street or across the planet. No signup fee, no subscription, no minimum, no "free trial" that bills your card later. The exact total is shown before you pay, and the price includes everything — no per-minute charges, no setup fees, no surprise add-ons.

$0.29 AUD per page, in your currency

Same price whether your fax goes 5 miles or 5,000. The amount shown at checkout is the amount you pay. If your fax fails to deliver, you get an automatic refund — no support ticket, no waiting.

Where can you send a fax with unofax?

unofax sends to fax numbers in over 45 countries, including every G20 economy. The most common destinations are:

United States · Canada · United Kingdom · Germany · France · Spain · Italy · Netherlands · Belgium · Switzerland · Austria · Ireland · Australia · New Zealand · Japan · Singapore · Hong Kong · South Korea · Mexico · Brazil · Argentina · India · UAE · Israel · South Africa.

We also publish dedicated guides for the most-asked destinations:

• Send a fax to the United States
• Send a fax to the United Kingdom
• Send a fax to Germany
• Send a fax to Ireland
• Send a fax to Canada
• Send a fax to Australia

Tips for a successful fax

A few simple steps can help make sure your fax arrives without problems:

• Use a high-quality file: clear, high-contrast documents produce the best results. Avoid photos of documents when possible — scan or use the original digital file instead. Black-and-white text on a white background always reproduces best.
• Double-check the fax number: include the country code and make sure there are no extra or missing digits. A wrong number means the fax cannot be delivered. unofax validates the format but cannot tell you if the number itself is wrong.
• Add a cover sheet for large recipients: a cover sheet helps the mailroom of a hospital, court or large office route your fax to the right person. Include the recipient's name, department and a one-line subject.
• Wait for the confirmation email: unofax confirms delivery once the receiving fax machine has acknowledged the transmission. This usually takes 1 to 3 minutes. Do not assume "sent" means "delivered" — wait for the confirmation.
• Save your reference ID: every fax gets a unique reference ID. Keep the confirmation email in case you need to prove later that the document was delivered on a specific date.

Frequently asked questions

Quick answers to the questions we hear most often. If your question is not here, contact us and a real person will reply.