Short answer: in insurance, fax is no longer about transmitting files — it is about stopping a clock. A claim report comes with very short deadlines (five working days as a general rule, two working days for theft, ten days after a natural disaster order is published in the French Journal officiel), and those deadlines are contractual: they appear in your policy's general terms and conditions. The day your insurer disputes the date of receipt, an email with no acknowledgement and a call to the customer service centre carry no weight. A timestamped fax transmission report, stating the number dialled and the number of pages, does. That is the whole residual value of fax in this sector — and it is far from marginal.
The paradox is obvious as soon as you open the general terms of a comprehensive home insurance policy or a professional liability policy: alongside the customer portal, the phone number and the postal address, the wording "by registered letter or by fax" survives in a considerable number of clauses. Insurance companies digitised their front office at great speed; they rarely rewrote the formal clauses of their older contracts. The result: a channel nobody promotes any more remains enforceable, and sometimes it is the only one whose use you can prove.
Why the date of receipt decides everything
Reporting deadlines are short and strict
The French Insurance Code sets out claim reporting in article L113-2: the policyholder must notify the insurer "as soon as they become aware of it and at the latest within the period set by the contract". That period cannot be shorter than five working days as a general rule. Two exceptions, however, are known to every claims handler:
| Type of claim | Usual reporting deadline |
|---|---|
| Water damage, fire, broken glass | 5 working days |
| Theft, vandalism | 2 working days |
| Natural disaster | 10 days after publication of the official order |
| Livestock mortality (agricultural) | 24 to 48 hours depending on the policy |
Missing the deadline does not automatically void your cover: the clause must be written into the contract and the delay must have caused the insurer actual harm. But nobody wants to argue that point. The practical issue is simple: prove you reported on time, with a document you hold yourself.
A customer portal is not evidence you hold
This is the blind spot of digitisation on the policyholder's side. When you file a report in your insurer's customer portal, the timestamp exists — but it sits with the insurer. You sometimes get a file reference number, rarely an exportable document stating the date, the content and the number of attachments. If the file is disputed two years later, or if you switch insurers and lose access to the portal, all you have left is a screenshot.
The same limitation applies to plain email: it carries no certain date. A read receipt depends on the recipient's goodwill, and large companies' spam filters regularly reject bulky attachments without the sender being warned other than by a technical message they never read. We covered this in detail when comparing fax and secure messaging: what sets the channels apart is not transport security, it is the nature of the record handed back to the sender.
What fax gives you back
Sending a fax produces a transmission report stating the date and time, the full number dialled, the number of pages actually transmitted, the duration of the call and the final status. It is a short, self-sufficient document that depends on no online account. Combined with an exact copy of the pages sent, it forms an evidence file you control end to end.
The five situations where fax is still the right reflex
1. Reporting a claim right at the deadline
You discover water damage on a Friday evening before a long weekend. The customer portal is down for maintenance, registered post won't go out before Tuesday, and the contractual deadline expires on Wednesday. A fax sent on Saturday morning, with its timestamped report, places the report within the deadline beyond any argument. This is exactly the scenario online fax still exists for: it does not replace the normal route, it secures the edges.
2. Chasing an adjuster or a loss adjusting firm
Loss adjusting firms appointed by insurers run on tight schedules and often keep a dedicated fax line for supporting documents. When you are chasing for the third time about a repair quote or an official report, the proof of sending matters as much as the sending itself. It lets you write, in your complaint: "documents sent on 14 March, transmission report attached".
3. Cancelling a policy
Since France's Hamon law and the spread of three-click cancellation, cancelling has become simpler. But group policies, commercial policies, loan insurance cover and contracts taken out with long-established mutual insurers frequently retain formal clauses. When the clause says "registered letter or fax", using one of the two channels named avoids a pointless argument about admissibility. For these mailings, many handlers keep a template letter to hand, and a case tracking logbook remains more reliable than a note in software you will one day stop using.
4. Reporting a personal injury or sick leave under a protection policy
Individual and group protection policies often impose even shorter incapacity reporting deadlines (sometimes 30 days, but with medical documents to attach). Those documents are health records: sending them must then follow the same precautions as those described in our guide to medical fax — minimal data envelope, exact recipient named, no diagnosis on the cover page.
5. Claims abroad
A vehicle damaged in Spain, damage to a holiday home in Portugal, a cargo claim on goods shipped to Germany: in some countries, local correspondents and foreign settlement offices remain very attached to fax. Always check the dialling code and national format before sending — the list of supported countries lets you verify the destination before losing a day over a wrongly dialled number.
Building a claim report that holds up
Prepare the documents before dialling the number
A claim report sent by fax must be legible first time: firms do not call back to flag a blurred page, they file it. Three rules are enough.
- Scan in black and white, 300 dpi, high contrast. Photos of damage come through badly on fax: describe them in the text and announce a separate delivery by email or upload to the customer portal.
- Number the pages in the form "3/7". It is the only way to prove nothing is missing.
- Put the essentials on the cover page: policy number, nature and date of the claim, name of the policyholder, callback details. Our detailed template appears in the article devoted to the fax cover page.
If you regularly handle paper files — accident statements, tradesmen's quotes, prescriptions — a document scanner with an automatic feeder will change your workflow more than any new software: it turns a stack into a clean multipage PDF in minutes. For accident statements filled in out in the field, a rigid A4 document folder prevents the creases that create black bands when scanning.
Writing the report: the minimum content
A claims handler expects six pieces of information, in this order:
- Policy number and identity of the policyholder.
- Date, time and place of the incident.
- Circumstances, in three to five factual sentences, with no legal characterisation.
- Nature and rough estimate of the damage.
- Identity of any third parties and their insurer.
- Numbered list of attachments.
Avoid writing "I request full compensation" in a first report: you do not yet know the extent of the damage, and an initial estimate that is too low will be held against you. "Provisional estimate, to be refined after assessment" is the standard wording.
Keeping the record in the right place
The transmission report must not stay in the inbox of whoever sent it. It goes into the claim file, alongside the copy of the pages sent, in a shared location. For professionals — brokers, property managers, fleet managers — a simple naming convention is enough: YYYY-MM-DD_claim_<number>_fax-sent.pdf. An encrypted external hard drive serves as cold storage for files that are closed but not yet time-barred.
For professionals: brokers, property managers, garages
The broker is a relay, not the final recipient
A broker receives the report, formats it and passes it on to the insurance company. So there are two timestamps, and only the second counts under the contract. In practice, always ask your broker for the date it was passed to the company, and keep your own proof of sending to the broker. Management mandates almost always provide that receipt by the broker counts as receipt by the insurer — check this, because that clause is your best protection.
Volumes for property managers and fleet managers
A building management company reports several dozen claims a year: water damage between units, broken glass in the lobby, vandalism in the car park. A fleet manager handles accident statements at the pace of the bumps and scrapes. At those volumes, online fax has a clear edge over a physical fax machine: sends are traced by name and the reports arrive as PDFs, ready to be filed. The question of organising numbers by site was covered in our guide to multi-site fax.
The end of the PSTN changes the method, not the need
Legacy analogue lines are gradually being switched off, and a fax machine plugged in behind a router no longer transmits reliably — T.38 protocol failures are a classic. Most companies still publishing a fax number have migrated it to a gateway. On the sending side, the conclusion is the same: use an online service rather than a machine. If you nonetheless keep a laser multifunction printer in the office for scanning and printing files, disconnect the fax side and handle sending from your computer.
Frequently asked questions
Is a fax as good as a registered letter for reporting a claim?
Not legally equivalent, but admissible. Registered post with acknowledgement of receipt remains the benchmark when a clause expressly and exclusively requires it. On the other hand, when the contract says "in writing" or "by letter or fax", a fax is an accepted means of proof, and courts assess all the evidence produced. A timestamped transmission report is solid prima facie evidence, all the more so when backed up by file follow-up.
What if the insurer says it never received the fax?
Produce the transmission report and the exact copy of the pages. Quote the number dialled as it appears on the report and compare it with the number published in the general terms or on the company's website. If the two match and the status reads "transmitted", the burden of explanation shifts to the insurer. Then send a written complaint to the complaints department and, failing a reply within two months, refer the matter to La Médiation de l'Assurance, which is free of charge.
Can a claim be reported by fax without a handwritten signature?
Yes for the report itself. However, certain settlement documents — compensation receipts, acceptance of an offer, mandates — require a signature and will be requested again as originals or with an electronic signature. Sign, scan, send: the faxed copy gets the file moving, the original follows.
Should the fax be kept after the claim is settled?
Yes, and for a long time. A policyholder's action against the insurer is time-barred after two years from the event giving rise to it (article L114-1 of the French Insurance Code), with cases extended to ten years notably in life insurance and for personal injury involving third parties. In construction, the ten-year structural warranty means keeping documents well beyond that. Keep the trio — document, report, sender's record — for the entire limitation period applicable to the file.
Is fax compatible with the GDPR for claim documents?
It can be, provided you limit the data sent to the strict minimum and check the number before each send. Wrong numbers are the main disclosure risk. The practical rules are set out in our guide to fax and the GDPR.
Key takeaways
- In insurance, the value of fax is not delivery but the proof of date you keep yourself.
- Deadlines are short: 5 working days as a rule, 2 days for theft, 10 days after a natural disaster order.
- A customer portal timestamps at the insurer's end; a transmission report timestamps at yours.
- Prepare legible, numbered pages with a complete cover sheet: the handler will not call back.
- Always file the transmission report together with the copy of the pages, in a shared folder, for the whole limitation period.
- Check the dialling code and number format before every international send, and ask your broker for the actual date it was passed to the insurer.
For a one-off send, the form is directly available from the home page; if you are waiting for a reply from an adjuster or a settlement office, the receive a fax page explains how to capture the response without installing any hardware.
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