The dutch government and other (bigger) organisations seem to have a habit to annoy people. One of the reasons they do so is security by obscurity. It has it’s flaw as shown in this blogpost by @levelsio.
He wrote a little script that fetches and forwards all the email, which everyone can do after loggin in with DigiD. As shown, this takes a lot of steps. Automating it can be done with less then 50 lines of code.