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Receiving mail that never reaches its destination often causes misunderstanding and can jeopardize your administrative procedures. Whether it is an official document, an invoice, or a simple personal letter, knowing how to act at the right time and with the right tools is essential to assert your rights.
📬 Online claim: prioritize the dedicated form with your tracking number as soon as the anomaly is noticed.
⏱️ Deadlines: you have 30 days after the shipping date to initiate your claim.
📄 Supporting documents: prepare your tracking number, your full contact details, and, if necessary, a bank account details (RIB) for reimbursement.
📞 Assistance: a call to customer service or a visit to the post office can speed up the resolution.
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Why your mail may not arrive
Several scenarios can explain non-receipt. Sometimes, a simple delay in postal sorting is enough to block a shipment. In other cases, a poorly positioned address label or insufficient postage results in refusal of delivery, or even a return to sender.
1. Delivery problem
A postal code error, a misspelled street number, or manual sorting can divert your letter. Postal workers handle thousands of letters every day; a small mistake is sometimes enough to send your mail into the wrong route.
2. Loss or damage
If a letter suffers a shock, tears, or is exposed to moisture, it may be set aside pending a decision. In sorting centers, this is called a “lost bag” or “damaged unidentifiable letter,” requiring further examination.

Steps to file your claim
Step 1: Check the tracking
Before any action, check the tracking of your shipment. You will know if the letter is still “in transit,” “delivered,” or stuck in a center. In case of “item delivered against signature” without your signature, a return to the post office is possible.
Step 2: Gather your information
Collect your tracking number, the shipping date, the sender’s and recipient’s addresses, as well as any proof of payment or deposit. If you are expecting an important shipment—contract, check, administrative document—consider attaching a copy of the missing item.
Step 3: Send the complaint
- Online via the official postal website form: simple and fast, you attach your documents in PDF.
- By registered mail with acknowledgment of receipt to your sorting center or postal mediator.
- At the post office: present yourself with your tracking printout and supporting documents.
It may happen that you want to anticipate the postal route to submit your complaint outside peak hours and obtain a more personalized exchange.
Deadlines to respect
30 days to act
As a general rule, you have a 30-day period from the date of dispatch to file your complaint. After this period, the procedure becomes more complex and any possible reimbursement less guaranteed.
Tracking and follow-up
After submitting the complaint, you will receive a case number. Note it carefully and follow up with customer service if the processing notice is delayed beyond 8 business days.
Useful letter templates and forms
| Document type | Destination | Access |
|---|---|---|
| Complaint form | Postal customer service | Online or in store |
| Registered letter with acknowledgment of receipt | Postal mediator | Downloadable in PDF format |
Example of introductory phrase: « Madam, Sir, I am writing to you following the non-receipt of my registered mail no. … ».
What to do if there is no response
- Contact the postal mediator within 2 months if no solution is found.
- Keep all your correspondence and complaints as evidence in case of further action.
- As a last resort, contact a consumer association for independent support.
FAQ
Can you be compensated for lost mail?
Yes, provided you have respected the complaint deadlines and provided a valid receipt. Compensation depends on the type of postage and insurance chosen.
What is the cost of an online complaint?
The online process is generally free. Only registered mails with acknowledgment of receipt are charged (~3 €), according to current rates.
How long does it take to get a response?
Allow between 8 and 15 business days for an acknowledgment of receipt, and up to 6 weeks for full processing, depending on the complexity of the case.