What is AR24 (Docaposte)? Certified Email Solution

by | 31 July 2025

AR24 (Docaposte): The electronic certified mail solution

AR24, developed by Docaposte (a subsidiary of La Poste Group), has established itself as a leading solution in the world of electronic registered mail. This digital platform is revolutionizing the way you send official documents, offering a modern and secure alternative to traditional mail.

What is AR24 (Docaposte)?

AR24 is an electronic registered mail (LRE) service offered by Docaposte, the digital subsidiary of La Poste Group. This solution allows users to send digital documents with the same legal validity as traditional registered mail, while ensuring compliance with the GDPR for the protection of personal data.

The AR24 service guarantees the sender’s identity, the integrity of the transmitted document, and proof of receipt through a qualified-level eIDAS certification recognized in all 27 countries of the European Union. This European certification effectively provides users with evidentiary value recognized by the French courts and full traceability for each transmission. AR24 also offers secure legal archiving of documents and electronic evidence for a period of 10 years, thereby ensuring the long-term preservation of evidence.

The Benefits of AR24 for Legal Professionals

For attorneys and legal professionals, AR24 offers significant advantages. The speed of delivery is the primary advantage: your documents arrive instantly, compared to 1 to 3 business days for traditional registered mail. This responsiveness is crucial for meeting strict procedural deadlines.

The savings are substantial and quantifiable. With rates starting at €3.50 (excluding tax) per shipment, compared to €4.50 to €6 for registered mail, AR24 generates savings of 20 to 30% per shipment. Law firms also save on ancillary costs: printing, envelopes, trips to the post office, and administrative processing time.

Full traceability provides optimal legal certainty while reducing the environmental impact. Every stage of the shipment is documented: proof of mailing, proof of receipt, and delivery attempts. These electronic records are admissible in court, while going paperless helps reduce your firm’s carbon footprint.

How does AR24 Docaposte work?

The processfor sending registered mail online with AR24 involves a few simple steps. Log in to your AR24 customer portal, then upload your document in one of the accepted formats: PDF, Word, Excel, or images (JPEG, PNG). The platform accepts files up to 20 MB, allowing you to send large documents, including appendices and attachments.

Next, enter the recipient’s contact information (up to 50 recipients per mailing) and confirm the mailing. AR24 automatically generates a time-stamped proof of mailing. The recipient receives a notification via email and text message informing them that a registered letter is waiting for them.

To view the document, the recipient must authenticate using a code received via text message or email. This strong authentication ensures that only the intended recipient can access the content. Once the document has been viewed, an electronic acknowledgment of receipt is generated. AR24 also offers integration APIs that allow law firms to connect the solution directly to their practice management software to automate document delivery.

AR24 Rates and Offers

AR24 offers several pricing plans tailored to different needs, with a significant cost advantage over traditional mail. The per-item rate of €3.50 (excluding tax) per shipment represents a substantial savings compared to registered mail, which costs €4.50, not to mention additional expenses (printing, envelopes, and trips to the post office). This difference results in an average savings of €1 to €2 per shipment, while eliminating logistical hassles.

Monthly plans offer even more attractive volume-based rates: €25 (excl. tax) per month for 10 mailings, €45 (excl. tax) per month for 25 mailings, and €85 (excl. tax) per month for 50 mailings. These subscriptions are ideal for law firms with a consistent volume of mailings. For example, a firm sending 50 registered letters per month saves approximately €75 per month compared to traditional postal services, providing an immediate return on investment.

Additional options enhance the service: proof of delivery (€2, excluding tax), hand-delivery (€5, excluding tax), orregistered email with an advanced electronic signature. Subscriptions are flexible, with the option to cancel at any time at no charge, offering valuable flexibility to adapt the service as your business evolves.

AR24 vs. Other Electronic Registered Mail Solutions

Compared to the competition, AR24 stands out for several reasons. Its affiliation with La Poste gives it institutional legitimacy that is highly valued by legal professionals. The intuitive and user-friendly interface makes it easy to get started.

Compatibility with leading industry software provides a competitive advantage. AR24 integrates easily into law firms’ IT ecosystems via dedicated APIs.

However, some competitors offer more competitive pricing or specialized features. The choice depends on your specific needs: volume of mailings, budget, and required technical integrations.

AR24 (Docaposte) is a proven and reliable solution for digitizing your certified mail. Its recognized legal validity, competitive rates, and ease of use make it an excellent choice for modernizing your professional practices while maintaining the essential legal certainty.

Regulatory Compliance and Safety

AR24 stands out for its high level of regulatory compliance and rigorous security standards. The solution holds an eIDAS qualified-level certification, ensuring the legal recognition of its transmissions throughout the European Union. This certification attests that the service meets the strictest requirements for electronic identification and trust services.

When it comes to data protection, AR24 ensures full compliance with the GDPR through:
• End-to-end encryption of transmitted data
• Exclusive hosting on servers located in France
• Strict privacy and personal data processing policies

The long-term preservation of evidence is another cornerstone of the Docaposte solution. All documents and receipts related to registered mail are securely archived for a minimum of 10 years, ensuring their availability in the event of a dispute or subsequent legal proceedings.

To maintain these high standards, AR24 undergoes regular audits conducted by the National Agency for the Security of Information Systems (ANSSI). The platform also holds ISO 27001 certification, an international standard attesting to the excellence of its information security management system. These certifications demonstrate Docaposte’s commitment to offering a service that combines legal compliance with first-rate technical security.

Zloop FAQ Start

Frequently asked questions

Find answers to the most frequently asked questions about AR24 Docaposte and its use in a legal context.

What is AR24 Docaposte?

AR24 Docaposte is an electronic registered mail solution developed by La Poste. It allows users to send official documents with the same legal standing as traditional registered mail. This platform provides proof of submission and electronic acknowledgment of receipt, ensuring full traceability of mailings. For legal professionals, AR24 represents a modern and efficient alternative to traditional mail.

How to Use AR24 Docaposte in a Law Firm?

To use AR24 in a law firm, you must register on the Docaposte platform. Once logged in, you can upload your documents, enter the recipient’s contact information, and select the desired level of registered mail. The system automatically generates the necessary legal proof of delivery. This allows attorneys to send formal notices, notifications, or official correspondence while maintaining complete digital traceability.

What are the benefits of AR24 for legal professionals?

AR24 offers several benefits to legal professionals: fast delivery (instant vs. several days), reduced postage costs, full digital traceability, automatic archiving of evidence, and compliance with legal requirements. The solution also enables real-time tracking of acknowledgments of receipt and integrates easily into the digital workflows of modern law firms.

AR24: Does Docaposte comply with legal requirements?

Yes, AR24 Docaposte is fully compliant with French legal requirements. The solution complies with Decree No. 2011-144 regarding the sending of registered letters via email. It holds the designation of Trusted Service Provider (PSCo), and its acknowledgments of receipt have the same probative value as traditional registered mail before French courts.

What security features does AR24 offer?

AR24 offers several levels of security: data encryption during transmission and storage, strong user authentication, qualified time-stamping of messages, and secure retention of evidence for 10 years. The platform is hosted in France and complies with the GDPR. For sensitive documents, AR24 offers enhanced encryption options and authentication via SMS or electronic certificate.

Are there any alternatives to AR24 Docaposte for lawyers?

There are several alternatives: Certigna by Dhimyotis, LRE (Electronic Registered Letter) from other qualified providers, or solutions integrated into certain legal software programs. However, AR24 remains one of the most widely recognized and used solutions among legal professionals in France, particularly due to its ease of use and established legal recognition.

Zloop FAQ End Zloop Structured Data Start Zloop Structured Data End

Frequently asked questions

Find answers to the most frequently asked questions about AR24 Docaposte and its use in a legal context.

What is AR24 Docaposte?

AR24 Docaposte is an electronic registered mail solution developed by La Poste. It allows users to send official documents with the same legal standing as traditional registered mail. This platform provides proof of submission and electronic acknowledgment of receipt, ensuring full traceability of mailings. For legal professionals, AR24 represents a modern and efficient alternative to traditional mail.

How to Use AR24 Docaposte in a Law Firm?

To use AR24 in a law firm, you must register on the Docaposte platform. Once logged in, you can upload your documents, enter the recipient’s contact information, and select the desired level of registered mail. The system automatically generates the necessary legal proof of delivery. This allows attorneys to send formal notices, notifications, or official correspondence while maintaining complete digital traceability.

What are the benefits of AR24 for legal professionals?

AR24 offers several benefits to legal professionals: fast delivery (instant vs. several days), reduced postage costs, full digital traceability, automatic archiving of evidence, and compliance with legal requirements. The solution also enables real-time tracking of acknowledgments of receipt and integrates easily into the digital workflows of modern law firms.

AR24: Does Docaposte comply with legal requirements?

Yes, AR24 Docaposte is fully compliant with French legal requirements. The solution complies with Decree No. 2011-144 regarding the sending of registered letters via email. It holds the designation of Trusted Service Provider (PSCo), and its acknowledgments of receipt have the same probative value as traditional registered mail before French courts.

What security features does AR24 offer?

AR24 offers several levels of security: data encryption during transmission and storage, strong user authentication, qualified time-stamping of messages, and secure retention of evidence for 10 years. The platform is hosted in France and complies with the GDPR. For sensitive documents, AR24 offers enhanced encryption options and authentication via SMS or electronic certificate.

Are there any alternatives to AR24 Docaposte for lawyers?

There are several alternatives: Certigna by Dhimyotis, LRE (Electronic Registered Letter) from other qualified providers, or solutions integrated into certain legal software programs. However, AR24 remains one of the most widely recognized and used solutions among legal professionals in France, particularly due to its ease of use and established legal recognition.