Germany has cheap international postage costs. Is there a virtual snail mail service in Germany?

A priority letter from Germany arrived showing only €1.25 in postage. It’s the best price I’ve seen. Going the other direction I have to pay €2.90.

So I suppose Germany is a good origin from which to send snail mail to the rest of Europe. Are there any services for that, whereby they receive a PDF by email or via web portal, print it, and mail it?