A “no ever” law requires a constitutional majority. And for this concrete case, some member states effectively already have that via privacy guarantees in their constitution.

Finally, it’s important to realize that the power of laws is limited to the extent that people are able and willing to enforce them. Some dictatorships have wonderful things in their constitution that are not heeded at all.

I would have thought that the right to privacy as a fundamental human right would have been sufficient. But apparently not....

Equally, there is abundant precedent for forbidding interference with old-fashioned postal communications, that seemingly doesn't translate to electronic communications...

This happened in Switzerland with cash.