How can I prove that I really sent my withdrawal notice to the merchant?

Under the EU withdrawal-button obligation (Directive (EU) 2023/2673), the burden of proof lies with the consumer. Three methods are legally recognised: the registered letter with acknowledgement of receipt (solid but costly proof), the plain email (proof if kept together with a server read receipt), and the compliant withdrawal button (the most robust proof: dated archiving with evidential value on the merchant's side, an automatic acknowledgement of receipt on a durable medium on the consumer's side). Electronic evidence is admissible in all 27 member states under the eIDAS Regulation (EU) 910/2014.

Is a plain email enough in the event of a dispute?

Yes, provided you can prove both the sending AND the receipt. Keep the email you sent (the 'Sent' folder), the server timestamp, and ideally a read receipt if the merchant has enabled it. If it is contested, you can ask your email provider for the server logs. Less reliable than registered post, but legally valid. Avoid emails sent from contact forms of which you keep no copy.

Does the withdrawal button that complies with the EU obligation remove the need for registered post?

Yes. The compliant button automatically generates an acknowledgement of receipt on a durable medium (a dated PDF, a server email) that constitutes the most robust proof in law. On the merchant's side, dated archiving with evidential value covers traceability. That is precisely the purpose of the mechanism: to eliminate disputes over the date of sending and the actual receipt.

How do you prove you sent your withdrawal notice to the merchant?

The merchant claims never to have received your withdrawal notice? It is up to you to prove that you did send it. The burden of proof lies with the consumer (Directive (EU) 2023/2673). Three methods are legally recognised, ranked from the most robust to the weakest : the compliant withdrawal button (dated, enforceable archiving + an automatic acknowledgement), the registered letter with acknowledgement of receipt, and the plain email you have kept. The compliant button is the safest and fastest solution.

With a compliant button, you immediately receive this dated acknowledgement, your proof of sending.

Comparison table of the three methods

Method

Evidential weight

Cost

Time

Compliant button

High (dated timestamp with evidential value)

No extra cost per request (subscription)

Instant

Registered letter with AR

High (postal tracking)

5 to 7 €

2 to 3 days

Electronic registered letter

High (eIDAS registered delivery)

2 to 4 €

Instant

Email with read receipt

Medium (server logs)

Free

Instant

Plain email

Low (no proof of receipt)

Free

Instant

Site contact form

Very low (no copy kept)

Free

Variable

The compliant withdrawal button: the most robust proof

The button compliant with Directive (EU) 2023/2673 automatically generates, at the moment the consumer clicks : a server timestamp, an acknowledgement of receipt on a durable medium sent by email to the consumer, and archiving on the merchant's side with evidential value. Three elements whose evidential weight is freely assessed by the judge.

That is precisely the aim the legislator pursued in mandating this feature : to eliminate disputes over the date of sending and the actual receipt, which were the main source of litigation before June 2026.

The registered letter: the traditional solution

The registered letter with acknowledgement of receipt remains the reference solution when the merchant has not implemented the compliant button. The postmark establishes the date of sending, the acknowledgement establishes the date of receipt. A robust solution, but slow (two to three days) and costly (five to seven euros per letter). The qualified electronic registered letter (an eIDAS registered delivery service) offers the same legal value for less and instantly.

The plain email: practical but needs securing

Legally valid but fragile in the event of a dispute. Best practices :

•Send from your personal address (not a contact form)
•Enable the read receipt if your provider allows it
•Keep the email you sent in the « Sent » folder
•Explicitly ask the merchant for an acknowledgement of receipt
•If there is no response after 48h, follow up with a registered letter