[lucb1e]

It is only purchasable if you install their software, can't just buy such a stamp on the website if I'm reading the page correctly?

I seem to remember Deutsche Post also had a thing you could just write on the letter, or maybe it was DHL's parcel service instead. Those were purchased simply online like any other product/service and, after paying, it told you what to write in the corner. Or maybe I misremember and they only have this system where you can take the pdf to a parcel shop and have them print your label.

Edit: found the "print in store" option, it's not for letters but for parcels https://www.dhl.de/de/privatkunden/pakete-versenden/angebot-... "Don't have a printer? Let your stamp be printed at [places]."

[cedilla]

There used to be a premium number you could send an SMS to. It was more expensive than a normal stamp to cover for the expensive billing.

"Handyporto" replaced this and that's probably also why you can't buy it on the website. Deutsche Post probably can't conceive of people who don't own a printer so they heavily advertise "Internetmarke" which requires one.

[illiac786]

Actually the one you write yourself (#PORTO) and the one to print (InternetMarke) are both equally prominent in the app.