Sending a Fax Abroad in 2026: Country Codes, Costs and Pitfalls

Short answer: to send a fax abroad, dial the number in international E.164 format — + (or 00 from France), then the country code, then the national number without its leading zero. The vast majority of international send failures have nothing to do with the recipient and everything to do with three mundane causes: a malformed prefix, a modem speed too high for a long-distance link, and a paper-size mismatch between A4 and Letter. An online fax service handles the first two automatically; the third is up to you.

Sending a fax across town and sending one to Osaka are two operations that have almost nothing in common beyond appearances. In the first case, the signal travels a few dozen kilometres and passes through two or three switches. In the second, it crosses international gateways, satellite or submarine segments, voice compression codecs, and sometimes three transit carriers that have never spoken to one another. Every hop is an opportunity to lose a page.

We regularly get the same question, phrased ten different ways: "why do my faxes go through domestically but not to Morocco?" Here's the full answer, country by country, cause by cause.

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International dialling: the number one cause of failures

E.164 format, in one minute

The ITU-T E.164 recommendation (International Telecommunication Union) defines the universal structure of a telephone number: 15 digits maximum, made up of a country code (1 to 3 digits) followed by the national number. Written correctly, an E.164 number looks like this:

+33 1 40 00 00 00        (France, Paris)
+1 212 555 0100          (United States, New York)
+212 522 00 00 00        (Morocco, Casablanca)
+81 3 5555 0000          (Japan, Tokyo)

Three rules alone eliminate 80% of errors:

1. The + replaces the exit prefix. From France, that prefix is 00. From the United States and Canada, it's 011. From Russia, it was historically 8 then 10. An online fax service accepts the + and handles the conversion for you — that's precisely the advantage.
2. Drop the national zero. The 0 in 01 40 00 00 00 is a trunk prefix internal to France: it doesn't exist in international dialling. The same logic applies to the British 0, the German 0, the Australian 0. Watch out for exceptions: Italy keeps the zero (+39 06 …), as does Côte d'Ivoire since the switch to 10 digits.
3. Add nothing else. No dots, no slashes, no "ext. 42". Spaces are tolerated by most interfaces; parentheses in the style of +1 (212) 555-0100 far less so.

The country codes that trip people up most often

One detail that gets expensive: in several countries in Africa and Latin America, numbering plans have been renumbered over the past fifteen years (a digit added, a regional code changed). A company directory printed in 2011 may contain fax numbers that are structurally invalid. Before concluding there's a fault, check the number on the recipient's official website, or in the numbering plan database published by the ITU-T.

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Why distance makes faxes fail

The longer the link, the slower the modem must go

A Group 3 fax machine negotiates its speed with the machine at the other end at the start of the call, following the V.17 (14,400 bit/s), V.29 (9,600 / 7,200 bit/s) and V.27 ter (4,800 / 2,400 bit/s) standards. That negotiation, orchestrated by the T.30 protocol, assumes a stable end-to-end channel.

On an international link, that channel passes through:

• transit gateways that sometimes re-encode the audio;
• echo suppressors that, if poorly disabled, mangle the modem tones;
• IP segments where the fax is already being carried over T.38 without anyone telling you;
• possibly a satellite hop, whose round-trip latency exceeds 500 ms.

The result: a 14,400 bit/s negotiation that works perfectly to Bordeaux fails on page 2 to Antananarivo. The remedy is counter-intuitive but proven: cap the speed at 9,600 bit/s, or even 4,800 bit/s for difficult destinations. You lose time, you gain the transmission. On a physical fax machine, this setting is usually found in the "Start speed" or "Initial rate" menu. On an online service, the platform applies its own progressive fallback policy.

Error correction (ECM): keep it on, with one exception

ECM (Error Correction Mode) splits the page into frames and requests retransmission of any that arrive corrupted. It's an excellent idea on a clean line. On a noisy international link, it can instead multiply retransmissions until the timeout expires, failing a send that would have gone through — a little speckled — without it. Practical rule: leave ECM enabled by default; disable it only after repeated failures to the same destination.

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A4 versus Letter: the paper-size trap

Here's one of the most underestimated problems in international faxing. France, Europe, Africa and most of Asia use the A4 format (210 × 297 mm, ISO 216 standard). The United States, Canada, Mexico, the Philippines and part of South America use the Letter format (216 × 279 mm).

In practice:

• Letter is 6 mm wider and 18 mm shorter than A4.
• An A4 document sent to a fax machine set to Letter has its last two lines cut off — or the page splits in two, inflating the bill.
• A Letter document received on A4 leaves a white band at the bottom, with no damage.

The fix is simple: generous margins. Allow at least 20 mm at the top and bottom, and never place a file number, a signature or a legal notice in the last two centimetres of the page. For regular sends to North America, a cover sheet template designed around this constraint settles the matter once and for all.

Another thing to watch: resolution. "Standard" mode (204 × 98 dpi) is illegible for Japanese or Chinese characters, and shaky for Arabic. "Fine" mode (204 × 196 dpi) doubles transmission time but remains the only sensible option as soon as the document isn't in the Latin alphabet. If you scan documents yourself before sending, a duplex scanner with automatic document feeder avoids crooked scans, the leading cause of pages arriving unreadable.

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How much does an international fax cost?

The three pricing models

There is no single rate, but three approaches:

Two points matter more than the headline price:

1. Billing for failed attempts. Some services charge for a page as soon as the connection is established, even if the transmission aborts. Others only charge for pages actually delivered. On a difficult destination, the gap is considerable.
2. Time increments. A dense A4 page in fine mode can take 40 to 60 seconds at 9,600 bit/s. If billing is per minute, one page can cost you two.

On a classic PSTN line, an international fax was still billed as a long-distance voice call — a model that has all but disappeared with the shutdown of the copper network. Since then, online fax has become the normal route: no dedicated phone subscription, no consumables, and a timestamped record of every send.

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Time zones, public holidays and business hours

In many countries, a fax is still a document that comes out on paper in an office. Sending it at 3 a.m. local time poses no technical problem — but if the fax machine is switched off overnight, or ran out of paper over the weekend, your document doesn't exist.

A few useful reference points from Western Europe:

• Japan: +7 h in summer, +8 h in winter. Send before 9 a.m. Paris time to catch the end of the local working day.
• California: −9 h. A 5 p.m. send from Paris arrives at 8 a.m. local time — ideal.
• The Gulf (UAE, Saudi Arabia): Friday–Saturday weekend in several government bodies.
• Israel: Friday–Saturday weekend, with a shortened Friday.
• North Africa: office hours often 8:30 a.m. – 4:30 p.m., with a significant shift during Ramadan.

For scheduled sends, the best approach is to plan them from the service's interface: most allow a delayed send time, which saves you staying late at the office. A simple multi-time-zone wall clock placed near the workstation makes the habit automatic in teams handling several continents.

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Privacy and compliance: what changes internationally

Sending a fax outside the European Union potentially means carrying out a transfer of personal data to a third country, within the meaning of Chapter V of the GDPR. If your fax contains a medical file, a named contract or bank details, the reasoning applies — being on paper exempts you from nothing.

Three minimum precautions:

• Check the recipient before every send. One wrong digit and the document lands with a stranger, with no way to recall it. The CNIL has repeatedly sanctioned wrong-recipient errors in the healthcare sector.
• Limit data to the strict minimum (data minimisation principle, Article 5 of the GDPR).
• Keep proof of sending: a timestamped transmission report showing the number called and the number of pages. That's the document that will serve as prima facie evidence in the event of a dispute.
• For sensitive documents sent from a shared space, a privacy screen filter prevents over-the-shoulder reading while you're typing the number — a trivial detail, a classic incident.

We cover these aspects in detail in our articles on the legal standing of faxes and on archiving faxes, which usefully complement this guide.

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Method: sending an international fax without failures

1. Check the number against a recent source (the recipient's official website, correspondence less than two years old).
2. Rewrite it in E.164 format: +, country code, national zero removed (except Italy).
3. Choose fine mode if the document contains non-Latin characters, handwritten figures or stamps.
4. Allow a 20 mm bottom margin for any North American destination.
5. Add a cover sheet with the recipient's name, department, total page count and a callback number in international format.
6. Schedule the send for local business hours.
7. Keep the transmission receipt with the document, in the same file.

If a destination keeps failing: drop the speed to 9,600 then 4,800 bit/s, disable ECM, then test with a single test page. If a test page goes through but the full document doesn't, the problem is call duration, not the line. For practices that archive their confirmations on paper, a lever arch file with monthly dividers remains the simplest way to find a receipt three years later.

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Frequently asked questions

Should I dial 00 or + for an international fax?

From an analogue fax machine in France, dial 00 then the country code. From an online fax service, enter the +: the platform applies the appropriate exit prefix. Both notations mean the same thing, but the + is portable everywhere.

Why do my faxes go through in Europe but fail in Africa or Asia?

Long-distance links add up latency, re-encoding and echo suppressors. Speed negotiation fails more easily. The first thing to try is capping the initial rate at 9,600 bit/s, the second is reducing the number of pages per send.

Is fax still used abroad in 2026?

Yes, very unevenly. It remains common in Japanese public administration, in part of the US healthcare sector, in customs and maritime shipping, and in several government bodies across North Africa and the Middle East. In Northern Europe, it has all but disappeared.

Can you receive a fax from abroad without a landline?

Yes: a virtual fax number receives faxes and delivers them as PDFs by email, whatever the country the call originates from. That's the principle behind fax-to-email, which we cover in our dedicated guide.

Does an international fax carry the same legal weight as a domestic one?

Its value depends on the law applicable to the contract or procedure, not on the path the signal took. Under French law, a fax generally constitutes prima facie written evidence; the transmission report strengthens its evidential weight. Some countries, notably the United States, grant it broader recognition in administrative exchanges.

How do I know the recipient actually received the document?

The transmission report confirms that the machine at the other end acknowledged receipt of each page (T.30 protocol). It does not prove the document was read. For a critical send, follow up with a call or a confirmation email.

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In summary

• E.164 format: +, country code, national number without the leading zero — except Italy, which keeps it.
• Speed: cap at 9,600 bit/s as soon as a destination causes trouble; 4,800 bit/s as a last resort.
• Paper size: 20 mm bottom margin for North America, where Letter is shorter than A4.
• Fine resolution is mandatory for non-Latin alphabets.
• Local hours: schedule the send for the recipient's business hours, shifted weekends included.
• GDPR: a fax outside the EU containing personal data is a transfer to a third country; check the number twice.
• Proof: always keep the transmission report with the document you sent.

Sending a fax abroad is no mystery: it's a matter of clean dialling, sensible speed and adequate margins. The rest — gateways, transit, codecs — belongs to the network, and that's precisely what an online fax service takes care of on your behalf.