I'm also not sure why they're not formatted properly.
Usually a lemmy client expects a certain kind of response after fetching a post. If it's different than what it should be (like this error), it often just outputs whatever else came. In this case it's a raw JSON encoded string.
There are ways to avoid this, and to output a nicely formatted error but usually the effort it takes is not worth the benefit it provides.
Marketers know that a lot of people immediately unsubscribe but they also know not everybody will. They still turn a profit after the discount and also just made a sale!
Additionally, I wouldn't be surprised if some merchants pass along/sell your email address, since now its in their system.
Ich weiß nicht was es bedeutet aber wenn ich das irgendwo hinschicke, kommt keine Werbung mehr:
hiermit widerspreche ich der Nutzung oder Weitergabe meiner persönlichen Daten zu Werbezwecken oder für die Markt-Meinungsforschung ausdrücklich (§ 28 Abs. 4 BDSG). Eine etwaig erteilte Einwilligung ziehe ich hiermit zurück.
People who do forbidden stuff usually don't read the signs prohibiting them