Not really, the buyer can just claim they didn't know who ordered the package or what was in it. It's not a crime to pick up your mail.

You can. And the court can ignore that, which they routinely do, and convict you anyway.

The court still needs good proof that you intended to receive the package. If they don't have proof, there isn't much for a conviction to stand on and the next instance should slap it back hard.

That's how it should be. But plenty of people have been convicted in this way, unfortunately. Plus they have probable cause to search your house which isn't much fun either.

honeypots are not allowed in germany afaik. The police is not allowed to sell drugs or ask people for drugs and then take them in

Also, drug laws are saner than in then US (apart from cannabis legalisation) and nobody is out to get you for minor amounts of any drug. Even getting caught selling drugs will get you locked up guaranteed, if you don't pair that with criminal conspiracy.

However, buying or selling weapons is no joke here.

It's pretty similar over the border in Switzerland too, with the exception of looser gun control laws.

You can buy an amount of weed here (for personal) use that would absolutely get you convicted with "intent to supply" in the UK.

My weed smoking friends were worried they wouldn't be able to pick up when they came to visit. It was not a problem.