Recently we have received feedback from our shipping forwarder that the German customs does spot check on parcels imported. If they consider the declaration value lower than normal or the shipping name incorrect, the consignee will be required to provide invoice. Overall the customs clearance in Germany is not as smooth and fast as that in other countries.
Compared to EMS and DHL Economy, Air Mail does better customs clearance in Germany. Based on our order history by Air Mail, 99% parcels have passed the customs and been delivered successfully.
Before you choose the shipping option for new orders, you might take a look at this link for better understanding: