Yes, Deutsche Post AG does impose weight restrictions on letters sent internationally. Generally, the maximum weight for standard international letters is up to two kilograms. However, it is essential to note that these restrictions may vary depending on the destination country and the specific service selected. For example, different postal products, such as priority or economy services, may have varying limits and guidelines. To ensure compliance with the current regulations and to obtain the most accurate and detailed information about weight restrictions, it is advisable to visit the official Deutsche Post AG website. The website provides comprehensive details on international mailing options, weight limits, and additional requirements that may be relevant to your specific needs.