[jastr]

I need to find a postcard printer in Europe.

[pbhjpbhj]

Vistaprint? They're a massive German operation - mind you every town has at least one print shop but VP already has a custom printing system, their parent company have a print fulfillment API (https://open.cimpress.io/).

[Just an occasional private customer]

[quanglam2807]

You can try https://www.kite.ly