Registered mail with return receipt no longer provides proof of delivery—here are some alternatives

Registered mail with return receipt requested, when used as part of electronic documentation, no longer constitutes prima facie evidence of a document’s receipt. The Hamburg Regional Labor Court (LAG) ruled on this in its judgment of July 14, 2025 (4 SLa 26/24), and the Federal Labor Court has now dismissed the appeal filed against that ruling (BAG, judgment of May 7, 2026 – 2 AZR 184/25).

The reasoning behind the Federal Labor Court’s (BAG) May 7, 2026, ruling has not yet been released. Nevertheless, employers should immediately stop sending important documents, such as termination letters, by certified mail with return receipt requested.

Background: Hamburg Regional Labor Court on Registered Mail with Return Receipt in Digital Proceedings

The case in question concerned the receipt of a letter inviting the employee to participate in a BEM process. The employer had claimed that it had sent the letter by certified mail, while the employee had disputed its receipt.

The Hamburg Regional Labor Court (LAG) argued that the documentation of the registered mail generated through the digital process is currently insufficient to presume a typical sequence of events (regular, proper delivery to the correct mailbox) that could constitute prima facie evidence of receipt. The documentation for the registered mail with return receipt, which is processed digitally, does not show that a specific letter actually ended up in the correct mailbox. Rather, it merely documents that the mail carrier scanned the item—along with its tracking number—before placing it in a mailbox. Whether the item then actually ended up in the correct mailbox depends on many different factors, such as the accuracy of the mail carrier and the number of mailboxes.

Therefore, there is no sufficient certainty that, under normal circumstances, the shipment reached the recipient’s sphere of control (his mailbox). In addition, the Hamburg Regional Labor Court criticized the fact that the delivery receipt included the following sentence after the “acknowledgment of receipt”: “I have handed the above-mentioned item to the authorized recipient, or placed the registered letter in the recipient’s mailbox.” However, it was neither checked off nor otherwise apparent which of the two delivery options was actually chosen in this specific case. Furthermore, the proof contained no information regarding the specific address or the exact time of delivery. As a result, it was not clear from the proof of delivery which action or method of delivery was confirmed by the postal employee’s signature. A delivery receipt worded in this manner cannot constitute prima facie evidence for this reason as well: due to the unclear documentation of the delivery process, the recipient has virtually no means of specifically refuting the alleged receipt, since the method of delivery is unclear.

The ruling makes it clear that, in the case of digitally documented registered mail with return receipt—at least in the form examined by the court—proof of delivery alone is not sufficient to establish prima facie evidence of receipt. In the event of a dispute, employers must be prepared to provide additional evidence if the employee disputes receipt.

The Federal Court of Justice (BGH) affirmed the prima facie evidence provided by a registered letter with return receipt in the former paper-based delivery process

In 2016, the Federal Court of Justice (BGH) recognized registered mail as proof of delivery (judgment of September 27, 2016 – II ZR 299/15). At that time, however, the postal service was still using a paper-based delivery process. The deposit was documented as part of a strictly standardized and physically verifiable procedure by peeling off the peel-off label before depositing the item. Today, delivery personnel document the deposit simply by scanning the item.

The paper-based process used in the past included both the drop-off of the shipment with a drop-off receipt and the removal and affixing of the Peel-off label onto the delivery receipt before placing it in the mailbox, the actual placement of the mail in the recipient’s home mailbox, the delivery person’s signature, and the date entry on the delivery receipt.

If both the delivery receipt and a copy of the shipping receipt were available, the Federal Court of Justice (BGH) held that this typically indicated that the shipment had entered the recipient’s sphere of control.

According to the Hamburg Regional Labor Court, such a typical sequence of events does not occur in today’s electronic procedures. As a result, the specific act of depositing the mail in the correct mailbox and the method of delivery are not documented in a sufficiently clear and verifiable manner.

Implications for practice: Stop using registered mail with drop-off service

To be on the safe side, employers should no longer use registered mail with return receipt for time-sensitive statements and those requiring particular proof. This applies in particular to:

• Terminations and notices of termination with proposed changes,
• Invitations, reminders, and final announcements in BEM,
• Warnings and reminders,
• Hearings prior to extraordinary or disciplinary terminations (proof of the one-week notice period),
• Deadlines of all kinds (for example, contract offers, time limits for exclusion).

Anyone who continues to rely on registered mail with return receipt here runs a significant risk of litigation. If the employee disputes receipt, the employer bears the burden of proof.

Safer Alternatives: Couriers and Bailiffs

If personal delivery in the presence of witnesses is not an option, the primary method of service when the recipient is absent is delivery by courier. Service by a bailiff is also secure, but it is time-consuming.

Delivery by Courier

Delivery by a courier has the advantage that the courier can provide concrete proof of placement in the mailbox or of hand-to-hand delivery.

To support the case, it is important to maintain complete documentation of the following steps:

• Placing the specifically identified letter into the envelope. This can be documented by HR department staff.
• Delivery (by mail or in person) to the employee. The delivery should be properly documented.

In practice, it has proven helpful for employers to provide the following documents:

• Enveloping log (who put which letter into which envelope, and when).
• Courier’s delivery log, including:
  • Date, time, exact delivery location,
  • Type of letter (for example, “Termination effective immediately as of …”),
  • Method of delivery (delivery to a home mailbox / in-person delivery),
  • Signature of the messenger.

Service by a bailiff, § 132 BGB

Service of a document by a bailiff is a very reliable method of service, but it is more time-consuming and expensive than using a courier.

In practice, companies are likely to make use of this only in particularly important or contentious situations.

Recommendations for HR Departments

In light of current case law, we generally recommend that HR and legal departments take the following measures:

Revise Internal Delivery Guidelines

Companies should specify in their internal policies that registered mail with return receipt is no longer to be used for critical correspondence (termination notices, BEM correspondence, written warnings, and notices setting deadlines).

Having a courier place the letter in the mailbox should be the first choice when in-person delivery is not an option.

Introduce standard forms for documentation

Train HR staff

Employers should inform employees who send legally relevant correspondence about the change and explain to them the importance of proof of delivery and the updated case law. HR departments, managers, and the mailroom should be aware that registered mail is no longer a secure option.

To ensure that companies can respond quickly when necessary, it makes sense to clarify in advance who can serve as the messenger, which company will be tasked with this role, and how the process will work in practice.

Documentation in the personnel file

Employers should systematically file delivery records, acknowledgments of receipt, and other supporting documents in the employee’s personnel file so that they can prove that all documents were delivered without exception, even years later.

Conclusion

Since the Federal Labor Court (BAG) dismissed the appeal against the Hamburg Regional Labor Court’s (LAG) ruling in its decision of May 7, 2026, it can be assumed that a registered letter with return receipt in the digital service procedure is no longer considered reliable proof of receipt.

For employers, this means that anyone who continues to rely on registered mail with return receipt for terminations, BEM invitations, written warnings, or other critical communications is operating under a false sense of security. Only a delivery practice consistently focused on couriers, building mailboxes, and comprehensive documentation effectively reduces the risk of litigation.