Electronic Registered Mail in Belgium: Legal Framework and Practical Solutions

Registered mail in Belgium: a deeply rooted habit

In Belgium, registered mail is an everyday tool for businesses and private individuals alike. Lease termination, formal notice, general meeting convocation, invoice dispute: the situations calling for proof of receipt are numerous.

Until now, the default solution was postal registered mail via bpost. But the European legal framework now offers a digital alternative: electronic registered mail, governed by the eIDAS Regulation. What matters is knowing when it is valid under Belgian law — and when going through bpost remains mandatory.

The Belgian legal framework

The eIDAS Regulation: directly applicable

The eIDAS Regulation (910/2014) is a European regulation, not a directive. It is therefore directly applicable in Belgium with no implementing legislation. Articles 41, 43 and 44, which govern qualified timestamping and electronic registered mail, apply as of right.

In concrete terms, three levels are layered on top of each other:

• Article 43.1 — any electronic registered mail, even non-qualified, is admissible as evidence before Belgian courts. It cannot be set aside solely because of its electronic form.
• Article 41 — a Qualified Electronic Timestamp carries a standalone presumption of accuracy of the date and integrity of the data, whether or not the registered delivery service is qualified.
• Article 43.2 — the full presumption (integrity + identification of the parties + date) is reserved for fully qualified services within the meaning of Article 44.

bpost’s partial monopoly

This is the most important Belgian specificity to grasp. Belgian law maintains a partial bpost monopoly for registered items relating to certain procedures:

• ❌ Judicial procedures — service and notifications in proceedings before Belgian courts must go through bpost
• ❌ Administrative procedures — certain communications with public authorities require bpost postal registered mail

This monopoly does not cover contractual relations between private parties. That distinction is fundamental.

Article 1.5 of the new Civil Code

Book 1 of the new Belgian Civil Code, introduced by the Act of 28 April 2022, entered into force on 1 January 2023. Its Article 1.5 defines the notion of notification and enshrines the reception theory:

“Notification is the communication of a decision or a fact by one person to one or more specified persons. The notification reaches the addressee when the latter becomes aware of it or could reasonably have become aware of it.”

This text is channel-neutral: it imposes neither paper, nor registered mail, nor any particular electronic means. What matters is that the notification reaches the addressee and that the sender can demonstrate it.

This is precisely where electronic registered mail differs from an ordinary email. An email, even with a read receipt, proves neither actual receipt nor the integrity of the content. eIDAS electronic registered mail provides both: a Qualified Electronic Timestamp on the document and an acknowledgement of receipt signed electronically by the recipient.

When is electronic registered mail valid in Belgium?

Electronic registered mail is a fully valid alternative in all situations governed by private law and contractual relations:

When must you still go through bpost?

Postal registered mail via bpost remains mandatory in the following cases:

Advantages for Belgian businesses

💰 A markedly lower cost

A Prior registered item via bpost costs around €7 for a standard domestic send. Electronic registered mail with an OTP signature costs 0.4 credit, i.e. less than €2 excl. VAT. For a business sending 30 to 50 registered items a year, the saving is significant.

⚡ Instant sending, around the clock

No more planning a trip to the post office. Electronic registered mail is sent in a few clicks, in the evening, at the weekend or on a public holiday. That is a decisive advantage for strict deadlines: a termination notice expiring on a Friday can be sent on Thursday evening at 11 p.m.

📋 Complete traceability

Every step is recorded in a timestamped Audit Trail: creation, invitation sent, automatic reminders, viewing, signature of the acknowledgement of receipt or explicit refusal by the recipient. This log is consultable in real time from your dashboard and downloadable as a PDF once the procedure is finalised. Where bpost gives you a handful of tracking statuses, you hold a complete evidence file.

🌍 Native European reach

For Belgian businesses working with European partners (the Netherlands, France, Luxembourg, Germany…), eIDAS electronic registered mail offers a single channel recognised across the EU. No more juggling the postal services of each country.

🇧🇪 A Belgian solution

e-Signature.eu is a Belgian platform, with European hosting and support in French and Dutch. Your data stays in Europe, in line with the GDPR.

e-Signature.eu’s positioning

Frequently asked questions

Is electronic registered mail recognised by Belgian courts?

The eIDAS Regulation is directly applicable in Belgium. Electronic registered mail is admissible as evidence before Belgian courts under Article 43.1 — it cannot be set aside solely because of its electronic form. Where it carries a Qualified Electronic Timestamp, that component additionally benefits from a legal presumption of accuracy of the date and integrity (Article 41), which considerably strengthens its evidential value. The full presumption of Article 43.2 does, however, presuppose a fully qualified service within the meaning of Article 44.

Can I terminate my lease in Belgium by electronic registered mail?

For a commercial lease, electronic registered mail is generally a valid alternative where the contract provides for registered mail without specifying the postal channel. For residential leases, caution is advisable: if the lease explicitly requires postal registered mail, or if judicial proceedings are contemplated, bpost registered mail remains the safer route. Sending both is the most secure strategy.

Is the recipient’s consent required?

The eIDAS Regulation does not require the recipient’s prior consent to receive electronic registered mail. The recipient gives consent to electronic communication by signing the acknowledgement of receipt, which contains an explicit clause to that effect. They must of course have an email address.

What happens if the recipient does not sign or refuses?

The recipient has 15 days to sign the acknowledgement of receipt; 3 automatic reminders are sent 4 days apart. They may also explicitly refuse the registered mail — that refusal is timestamped and recorded in the Audit Trail, like a refusal at the post office counter.

In both cases the document is not transmitted to the recipient, and you keep all your proof of sending: the Qualified Electronic Timestamp, proof of the invitation, the record of the reminders and the complete Audit Trail.

Is e-Signature.eu a QTSP?

No. e-Signature.eu relies on QTSPs certified at European level for the Qualified Electronic Timestamp and the qualified signatures (itsme®, Evrotrust). The platform orchestrates the process and integrates these qualified trust services into a simple user journey, without itself being a qualified provider.

Key takeaways

• eIDAS applies directly: The eIDAS Regulation applies in Belgium without implementing legislation. All electronic registered mail is admissible as evidence (Article 43.1), and the Qualified Electronic Timestamp carries its own legal presumption (Article 41).
• Valid for private relations: Formal notices, contract terminations, general meeting convocations, B2B communications — electronic registered mail is a fully valid alternative in contractual relations.
• bpost remains mandatory for judicial matters: Judicial and administrative procedures in Belgium still require postal registered mail via bpost. When in doubt, sending both gives maximum coverage.
• Article 1.5 of the Civil Code is neutral: In force since 1 January 2023, it enshrines the reception theory without imposing a channel. What matters is being able to show that the notification reached the addressee.
• 70% saving: Less than €2 excl. VAT versus around €7 at bpost, with instant sending, no travel and a complete Audit Trail.
• A Belgian and European solution: e-Signature.eu is a Belgian platform, with European hosting, bilingual FR/NL support and reach across the EU.