"that is not how it works in germany or any EU country I know about, like france, italy or UK or netherlands."
I would like to make two objections to your statement.
1. German legal system is quite different from those of other European countries in that it puts a very special emphasis on human rights and very strong limitations to the power of government. Most of these limitations were invented to secure the "never again" principle, referring to the specific role Germany was playing during the Second World War. To the best of my knowledge, no other country in the E.U. has any comparable set of regulations. By the way, this German particularity gave rise to many cases in which German regulations (more respective of human rights) were in conflict with European regulations (less respective) and were consequently invalidated by the CJEU for the sake of "uniform treatment" (see Eugen Schmidberger Internationale Transporte und Planzüge, C-112/00, for an example).
Anyway, my point is that you can not possibly compare limitations on government action existing in Germany with those existing in any other country of European Union (and, for that same reason, to countries signatories of ECHR).
2. I know no sound man who can pretend to *know* four legal systems (in your case, .de, .fr, .it & .nl).
3. Sticking to an example which is familiar to me (I am a practicing French attorney), I have to say that, whatever French regulations are in this matter (e-mail eavesdropping), I don't doubt any second that they are infringed on a regular basis by French authorities. This is a mere generalization of phone eavesdropping examples. Just google "écoutes téléphoniques france" and you will be surprised to find out how often phone eavesdropping scandals occur in this country and involving most prominent politicians. The last one I can remember of took place in october 2010 (you can use google translation services on this article http://www.ladepeche.fr/article/2010/10/01/918282-Affaire-Woerth-Bettencourt-Les-ecoutes-telephoniques-du-Monde-etaient-illegales.html );
4. forgive me if I am mistaken, but your forum signature looks very much like an advertisement, and this seems a little bit inappropriate to me.