Even if that were true -- it's not -- you still have a good option: obscure your address on the envelope, obscure any barcode printed on the envelope or inside...
On Windows 10 and Office 2016, locate the tiny folder in C:\Program Files (x86)\Yahoo! Sync and in there is an zcologctl.exe. If you run this, you get the prompts above...
You can add the Greek language on any iOS devices. Go to Settings, General, Keyboard, and Keyboard again. Then, select Add new keyboard and find Greek in the other iPhone...